a student walks on a treadmill belt moving at 4.0 m/s and remains at the same place in the gym. what is the student's speed relative to the treadmill?

The momentum of the ostrich with mass 163 kg at velocity 14m/s would be 2282 kg·m/s

Momentum is characterized as the intensity of a body's motion. As momentum depends on both velocity and the direction of the body's motion, it is quantified by "mass velocity". Since velocity is a vector and mass is a scalar, momentum is a vector quantity. Mass times speed equals momentum.

p = m*v

= 163*14

= 2482 kgm/s

Although these physical variables are comparable, force and momentum differ from one another. Whether it is a pulling or pushing movement, force is often the outside influence acting on a body. The quantity of motion within a moving body is represented by momentum, on the other hand.

"The motion of an item equal to the product of its mass and its velocity" is referred to as momentum. When we say anything has momentum, we are referring to its precise mass and direction of motion.

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The wavelength of light waves 1.66 × 10⁶m if their frequency is 5.0 x10¹⁴ Hz. Light waves travels with very high speed.

In physical science, the frequency is the spatial time of an occasional wave — the distance over which the wave's shape repeats.[1][2] It is the distance between back to back relating points of similar stage on the wave, like two nearby peaks, box, or zero intersections, and is a quality of both voyaging waves and standing waves, as well as other spatial wave patterns. The reverse of the frequency is known as the spatial frequency. Frequency is regularly assigned by the Greek letter lambda (λ).

For electromagnetic wave ,we know an expression

c=ν × λ

where c is the defined as the speed of wave in any medium,

ν is  defined as the frequency of the wave and

λ is defined as the  wavelength of the wave.

We know that value of c=3×10⁸m/sec

Therefore, putting the values we get

=>3×10⁸=5.0 x10¹⁴ ×λ

=>λ=(5.0 x10¹⁴) / 3×10⁸

=>λ=1.66 × 10⁶m

Hence, wavelength is 1.66 × 10⁶m.

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A concave mirror has a focal length of 17 cm. the mirror forms an image located 42 cm in front of the mirror. - 1.40 is the magnification of the mirror

A microscope's capacity to generate a picture of an item at a scale that is bigger (or even smaller) than its real size is known as magnification. Only when it is feasible to discern more details of an object in the picture than when examining the object with the unassisted eye can magnification serve a beneficial function.

Given:

A concave mirror has a focal length of  = F = 17 cm

This mirror forms an image located = V =  42 cm

(in front of the mirror)

magnification of the mirror= M = ?  (Include the sign.)

It is known by the formula mirror

1/ F = 1/U + 1/V

where U is the distance  of the object form mirror = U = ?

thus,  FV / (V - F)  = U

or, (17)×(42) /(42 - 17) = 28.56 cm

thus, U = 28.56 cm

So, magnification of the concave mirror:

M = - V / U

or, M = - 40 cm / 28.56 cm

or, M = -  1.40

thus, magnification, M = - 1.40  

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52 inches high & 15 inches wide describe a typical four-drawer file cabinet. The cabinet's center of gravity is where it will be if it is equally loaded. To clean below it, an employee is tilting a file cabinet to the side. He tilts the cabinet at a 16.09-degree angle to prevent it from falling over.

The person is free to spin in any direction around this point.

For calculating angles:

H is the parallel to the direction and Tan = H W

the base and breadth of W

In our Situation

H=52 inches

W=15 inches

Tan∅ = 52 ÷ 15

∅ = [tex]Tan^{-1}(\frac{52}{15})[/tex]

∅ = 73.90°.

This is the angle at the corner

The total angle is:

∅ + [tex]\alpha[/tex] = 90

[tex]\alpha[/tex] = 90 - 73.90

[tex]\alpha[/tex] = 16.09°.

Before the cabinet topples over, he tilts it at a 16.09-degree angle.

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The question is -

A standard four-drawer filing cabinet is 52 inches high and 15 inches wide. If it is evenly loaded, the center of gravity is at the center of the cabinet. A worker is tilting a filing cabinet to the side to clean under it.

A. To what angle can he tilt the cabinet before it tips over?

The big bang not produce a significant proportion of elements heavier than helium because in nuclear fusion hydrogen forms helium.

Light elements interact through nuclear fusion to produce heavier elements (up to iron). When interacting nuclei from low atomic number elements like hydrogen (atomic number 1) or its isotopes deuterium and tritium are involved, substantial amounts of energy are released. The first weapons to utilize nuclear fusion's enormous energy potential were thermonuclear ones, also known as hydrogen bombs, which were developed in the decade immediately following World War II. For a detailed history of this development, see nuclear weapon. Given the potential for peaceful uses of the process and the virtually limitless supply of fusion fuel on Earth, there has been a significant push to harness nuclear fusion for the generation of power.

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The average force during the bounce of a 0.140-kg baseball that is dropped and reaches a velocity of -1.20 m/s just before it hits the ground and bounces with an upward velocity of 1.00 m/s is 15.5 N

J = m Δv

J = Impulse

m = Mass

m = 0.14 kg

Δv = Change in velocity

Δv = vf - vi

vf = Final velocity

vi = Initial velocity

vf = 1 m / s

vi = - 1.2 m / s

Δv = 1 - ( - 1.2 )

Δv = 2.2 m / s

J = 0.14 * 2.2

J = 0.31 kg m / s

J = F Δt

F = Force

Δt = Change in time

Δt = 0.02 s

F = J / Δt

F = 0.31 / 0.02

F = 15.5 N

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A simple pendulum's string needs to be 24.8 metres long in order to oscillate precisely once every 10 seconds.

Use the formula for a simple pendulum:

T = 2π √(L/g)

Where T is the period (time to complete a full oscillation), L is the length, and g is the acceleration due to gravity ≈ 9.81 m/s^2.

Since we need to find the Length of the string we'll solve the equation for L.

√(L/g) = T / (2π)

L = [T / (2π) ] ^2 * g = [ 10.0s / (2π) ]^2 * 9.81 m/s^2 = 24.8 m

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When an electronic or electrical gadget emits heat, it is said to be power dissipating.

An electric or electronic device that releases heat (or other waste energy) as a byproduct of its intended operation is said to be wasting energy (uncountable). Central processor unit power dissipation is a key component of computer architecture.

The process of power dissipation occurs on its own. Each resistor with a voltage drop across it will lose power as a result of the circuit. Due to the conversion of electrical energy into thermal energy, each resistor has a power rating.

A CMOS circuit's overall power dissipation can be expressed as the sum of three key elements: decrease in static power movement causes a loss of power (when the circuit is switching) when transistors are switched, there is a power loss that results in a short circuit.

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The cost of method because the source's pace procedures the velocity of sound transferring to the proper will be 1/2fs.

When each movements withinside the same route with same velocity n' = n, i.e. there can be no Doppler impact because of the truth relative motion amongst deliver and listener is zero.

The motion of the observer will adjust the frequency of the measured sound from a table certain deliver: An observer moving in the direction of the deliver measures a higher frequency. An observer moving a ways from the deliver measures a lower frequency.

The Doppler impact is an alteration withinside the determined frequency of a legitimate due to motion of each the deliver or the observer. The actual trade in frequency is called the Doppler shift.

It will cause an increase in frequency heard thru an observer at the same time as the deliver is moving withinside the direction of the observer and a decrease in frequency heard thru an observer at the same time as the deliver is moving a ways from the observer. The doppler impact can be determined at the same time as an ambulance with a siren on procedures and passes an observer.

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Answer:

If the two forces are acting simultaneously on the body, then vector addition will supply us with the resultant force. Note that when the two forces are acting directly opposite each other, we expect the resultant to be smallest, and conversely, when they are acting in exactly the same direction, they will exert the greatest resultant force (simply the sum of the two force magnitudes).

Kinetic equation can be solved by the formula (1/2*m*v²).

Kinetic equation is the equation used to solve the problems related to kinetic energy.

There are two basic forms of energy: potential and kinetic energy.

The kinetic energy of an object can be easily determined by an equation using the object's mass and velocity.

Mathematically, kinetic energy is given by Kinetic equation i.e. KE =  (1/2*m*v²).

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The cycle of water or H₂O evaporating from lake and other bodies of water forming clouds and rain back to the surface of the earth happens in hydrosphere and stratosphere.

Hydrosphere is defined as water that is on the earth including surface of the planet such as ocean, lake and ice, underground source of water such as groundwater, as well as moisture in the air. The water, also known as H₂O gets heated up by the sun, evaporates into the air forming clouds happen in the atmosphere of the earth, specifically stratosphere, where most of the clouds are forming. After the clouds can no longer hold the accumulation of vaporization of the water, it will eventually get released back into the earth in the form of rain or snow.

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An earthquake is a sudden release of energy in the Earth’s crust that creates seismic waves. These seismic waves travel through the Earth and can cause destruction of property and human life.

The type of seismic wave that causes the most destruction during an earthquake is the surface wave. Surface waves are formed when the energy released by an earthquake is transmitted through the Earth’s crust. These waves travel along the surface of the Earth and can cause extensive damage to structures near the epicenter of the earthquake. This is because surface waves have a greater amplitude than other types of seismic waves, meaning they are more powerful.

The energy released by these waves can cause buildings to collapse, bridges to buckle, and roads to crack. Surface waves can also cause landslides and soil liquefaction, which can lead to further destruction of property. Surface waves can also cause damage to human life. These waves can cause the ground to shake violently, which can cause people to fall and be injured. The shaking can also cause objects to fall from shelves or walls, which can lead to injury or death. Additionally, surface waves can cause tsunamis if the earthquake occurs near a body of water, which can lead to significant loss of life.

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Answer:

Explanation:'Distance' is the total length travelled by an object. The standard unit is the 'metre'.

A distance-time graph shows how far an object has travelled in a given time.

Distance is plotted on the Y-axis (left) and Time is plotted on the X-axis (bottom)

Technician A says the lens of a sealed beam headlight has convex prisms molded to the inner surface. Technician B says it’s an airtight assembly containing a filament, reflector, and lens. The correct statement is told by: both technicians.

A sealed beam lamp is an enclosed bulb in front of a glass lens we can find in a headlamp. Each part of the sealed beam cannot be replaced separately. The sealed beam headlights have parabolic aluminized reflectors in the form of convex prisms molded to inner surface. It also contains a filame, reflector, and lense. Hence, both statement from the technicians are true.

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The kind of influence which Solomon is experiencing in this scenario is generally referred to as informational social influence.

In Psychology, an informational social influence can be defined as a situation in which a person (individual) conforms to new information or arguments because he or she has a desire to be right (good and just), especially by looking to others who are believed to have more information.

This ultimately implies that, an informational social influence is a type of conformity which is associated with internalization and it typically occurs when a person (individual) is either unsure and skeptical about a situation or lacks knowledge.

In this context, we can reasonably infer that Solomon is experiencing informational social influence in this scenario.

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The speed of a 12 kg block on a frictionless horizontal surface attached to a light spring (force constant = 0.80 kN/m) when it is 13 cm from its equilibrium position is 1.32 m/s.

The law of the conservation of energy states: “The total energy is constant in any process. It may change form or be transferred from one system to another, but the total is the same.”

Energy can be changed from one form to another (potential energy can be converted to kinetic energy) but the total energy in the domain remains the same.

The equation is:

Total energy = KE + PE

In a spring, the applied force is stored as potential energy which is given by

PE = ½ kx²

And kinetic energy:

KE =  ½ mv²

Remember that energy is the ability to do work and the work done is the force applied to an object and the resulting displacement.

So,

E = Fx

We have,

m = 12 kg

k = 0.8 kN/m

F = 80 N

x = 13 cm ⇒ 0.13 m

To determine the speed, use the equation:

Fx = ½ kx² + ½ mv²

80 (0.13) = ½ (0.8) (0.13)² + ½ (12)v²

10.4 = 0.00676 + 6v²

6v² = 10.39

v² = 1.73

v = [tex]\sqrt{1.73}[/tex]

= 1.315 ≈ 1.32 m/s

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Answer:

The answer should be about 0.77 m/s.

Explanation:

This is because there is a rightward force of 80 N (the applied parallel force that’s stated)
BUT, there’s also the leftward force which is the potential energy produced by the pulling of the spring,
which equals to: (0.5)*(k, or spring constant, or in this case 800N)*(x, or distance from equilibrium point, or in this case 0.13m)^2 = 0.5*800*0.13*0.13 = 6.76J
This is the work done by the spring, and since work equals Force times Distance(in this case 0.13m) we get 6.76=0.13F, solve for F, F=52N
NOTE: since this is a leftward force, it is a negative force.
This means that there’s a net force of 28N
Since: F=ma, 28=12a
Which is about: 2.33=a
Now, as we know, a equals change in velocity over change in time, so substitute into the equation above:
2.33 = deltaVelocity / deltaTime
deltaVelocity = finalVelocity(at 0.13m) - initialVelocity(in this case 0) = finalVelocity
deltaTime = finalTime(at 0.13m) - initialTime(in this case 0) = finalTime
And so: 2.33 = finalVelocity / finalTime
Rewrite: 2.33*(finalTime) = finalVelocity
As we know: (displacement) = (intialVelocity)*(time) + (0.5)*(acceleration)(time)^2
If we plug in everything we know: 0.13 = 0*t + 0.5*2.33*t^2
Simplify: 0.13 = 1.17*t^2
Solve for t: 0.11 = t^2
0.33 = t
Back to our previous equation: 2.33*(finalTime) = finalVelocity
Plug in 0.33 for time: 2.33*0.33 = finalVelocity = 0.7689
Round off: 0.77 m/s

*I apologize for not including units throughout all of my explanation, but it’s hard to write this much on my phone, and it’s currently 2am.
Also, some of my terms might probably not be the most commonly used, but it’s how i feel i can explain it best.
Also, judging by the wording of the question from the poster(which by the way has a bunch of misspellings), where they write “acting parallel to the surface is applied to the block, as shown” I’m led to believe it is the same problem I saw in my class, as a picture is displayed below with the parallel force pulling on the string, and the right answer was marked as 0.77 m/s.

**Please correct me if I’m wrong in any part of my explanation, as I’m still learning, but as I got this problem marked as correct, I’m led to believe I got this right ;-;

The child is subjected to a force of 100 N from the object.

Given,

There is an equal and opposite reaction to every action, according to Newton's third law of motion.

Thus, the child is subjected to a force of 100 N as a result of the object.

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Tension required in the string 17.424N .

A wave's speed increases with increased string tension, which raises its frequency (for a given length). By applying varied amounts of pressure, you can alter the string's length, the standing wave's wavelength, and the frequency.

A string can be raised to the pitch of the following note by applying too much tension, but it can be readily lowered by releasing tension. The pitch rises as the strain does. A string's length is also crucial. A string vibrates and makes music when it is supported at two places and pulled.

The fundamental frequency rises with increasing tension. The fundamental frequency rises with the weight of the string.

Here L = .6 , n = 6 , m = 14.4 x 10^(-3.)

Tension required in the string = (4 * L^2 * f^2) / n) * u

u=m/l

u= (14.4*10^-3 kg) /.6m

u = .024 kg/m

T = (4 x .6 x .6 x 55 x 55 / 6) x .024

 = 726 x .024 = 17.424 N

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The frequency of a sound wave with a period of 2 seconds is 0.5Hz..Frequency is said to be inversely proportional to time period.

Frequency suggests the amount of cycles in a particular unit of time. The avocation for why the sky is blue or anything contains assortment can be really figured out by it. In addition, it can similarly get a handle on why the voice of specific individuals is significant while for others it isn't significant. Moreover, recurrence plays a significant impact on the notes of a piano or different instruments.

This number of occasions is obviously a major property of a wave. The waves incorporate people reliably. Besides, light is an electromagnetic wave and the fan is a sound wave. A wave is certainly a vibration and conveys energy with it. By and large objective, the amount of waves passing by each second suggests the repeat of the wave. Additionally, its assessment occurs in Hertz (Hz).

So, we know a formula

Frequency=1/Time period

which states that frequency is just converse of time period.

=>v=1/2

=>v=0.5/sec

or v=0.5Hertz.

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Maximum instantaneous speed occurs when the mass moves through the region where the spring is compressed.

The rate at which the speed and direction of a moving object alter over time is known as acceleration. An item or point is said to be accelerated when it moves more quickly or more slowly in a straight path. Because the direction is always changing, travel on a circle accelerates even while the speed is constant.

The rate at which an object's velocity alters in relation to time is referred to as acceleration in physics. The acceleration of an object is the result of all the forces acting on it, according to Newton's Second Law. The meter per second squared is the unit of acceleration in the SI system (m s2).

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Using a high-resolution telescope like the Hubble space telescope is the most effective approach to determining the distance to a galaxy.

The most distant star ever observed is Icarus, a huge blue star that covers more than half the universe. Even with the biggest telescopes in the world, they are typically too faint to be seen.

However, scientists were able to find this far-off star and achieve new distance records because of a natural variation that considerably intensifies the star's feeble shine. Icarus was also used to test the dark matter hypothesis and investigate the makeup of nearby galaxy clusters.

This star is so far away, hidden in a very vast spiral galaxy, that it took nine billion years for its light to reach Earth. The cosmos seems to have existed when it was around 30% older than it is now.

This star can be seen because of gravitational lensing, a cosmic phenomenon. Light is bent and amplified by the gravity of large foreground galaxy clusters, which functions like a natural lens in the cosmos. A single backdrop object's light can produce several images. Light is bright enough to see extremely faint and far-off objects and is substantially intensified.

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A person on the scales rides the elevator. The scale currently reads 294 Newton.

The elevator accelerates at 4.90 m/s2 and has a mass of 60.00 kg.

As we all know, the weight of an item is determined using the formula W = mass x acceleration, or 60 x 4.90.

It carries a 294 Newton weight.

Newton's first law of motion explains how things will behave when all external forces are equal. The first law, often known as the law of inertia, asserts that if an object's forces are uniformly distributed, its acceleration will be zero metres per second.

An object is considered to be in equilibrium and not accelerate when all forces are in balance. Newton proposed that a thing will only speed up if there is a net or unbalanced force acting on it.

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Even though speed doesn't vary, acceleration is a change in motion that slows down, speeds up, or changes direction.

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For 500nm the second order maxima 2m away would be 1cm

For 650nm the second order maxima 2m away would be 1.12 cm

Maxima and minima are the maximum or the minimum value of a function within the given set of ranges.

The separation between the second order maxima is: ymax=2cm y max = 2 c m .

Assumption of infinite source distance gives plane wave at  slit. So, all amplitudes are in phase.

Here, sepration between 2nd order maxima will be given by

= 2(yd) = 2 (m+1/2) lamda×D/d

= 2 (2+1/2) lamda D/d = 5 lamda D/d

Here, d= 0.50mm=0.50×10^-3m

D=2m

For lambda = 500nm

Separation = 5 lamda D/d = 5(5×10^-7m)(2m)/(0.5×10^-3m) = 1 CM

For lamda = 650nm

Separation = 5 lamda D/d= 5(650×10^-9m) (2m) /(0.5×10^-3m) = 1.12cm

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The magnitude of the impulse on him from the water is equal to -896 Ns.

Impulse is referred to as the integral of any force that is applied over a time interval for which it acts. In order to find the impulse we have the information as

Height = 12m

Mass = 64kg

The kinetic energy is expressed as 1/2mv² while potential energy is expressed as mgh. From the law of conversation:

1/2mv² = mgh

where m is mass of Henry, v is velocity, g is acceleration due to gravity and h is height/. Now, further solving

v = ✓2gh

v = ✓2 × ✓9.8 × ✓10

v = 14m/s

The change in velocity or the Impulse will be

Impulse = 64(0 - 14)

Impulse = 64 × -14

Impulse = -896Ns

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Complete Question:

Until he was in his seventies, Henri LaMothe excited audiences by belly-flopping from a height of 12 m into 30 cm. of water. Assuming that he stops just as he reaches the bottom of the water and estimating his mass to be 64 kg, find the magnitude of the impulse on him from the water.

Answer:

Below

Explanation:

Momentum =  m * v

momentum / m = v

2.1 / m = v

Cannot answer this with a specific numerical  value as we do not know the ball's mass (we should also have the units of momentum in question)

The radius of star is [tex]97.22*10^{3} m[/tex].

Using the angular  formulas can determine the radius using both values neutron star and the the knowing star. So,

L=I*w

[tex]L_{1}=I_{1}*w_{1}=L_{2}=I_{2}*w_{2}[/tex]

[tex]I_{1}*w_{1}=I_{2}*w_{2}[/tex]

where,

           I=Inertia of the star

          w=angular velocity

[tex]I=\frac{2*m*r^{2}}{5}\\w=\frac{2\pi}{t}[/tex]

Notice the angular velocity determinate by the time and the Inertia have the radius value. So,

[tex]\frac{2}{5}*m*r_{sn}^{2}*\frac{2\pi }{t_{1}}=\frac{2}{5}*m*r_{s}^{2}*\frac{2\pi }{t_{2}}r_{sn}^{2}*\frac{1}{t_{1}}=r_{s}^{2}*\frac{1}{t_{2}}r_{sn}^{2}=r_{s}^{2}*\frac{t_{1}}{t_{2}}\\t_{1}=0.2s\\t_{2}=30day*\frac{24hr}{1day}*\frac{60minute}{1hr}*\frac{60seg}{1minute}=2.592*10^{6}s\\r_{sn}=3.5*10^{8}m*\sqrt{\frac{0.2s}{2.592*^{6}s}}\\r_{sn}=97.22*10^{3} m[/tex]

So the radius of the star is [tex]97.22*10^{3} m[/tex].

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The wavelength of wave is 0.15×10⁸m if its frequency is 20Hz.Waves need  medium to travel from one place to another.

Expecting a sinusoidal wave moving at a proper wave speed, frequency is conversely corresponding to recurrence of the wave: waves with higher frequencies have more limited frequencies, and lower frequencies have longer wavelengths.

Frequency relies upon the mode (for instance, vacuum, air, or water) that a wave goes through. Instances of waves are sound waves, light, water waves and occasional electrical signs in a conduit.

For electromagnetic wave ,we know an expression

c=ν × λ

where c is the defined as the speed of wave in any medium,

ν is  defined as the frequency of the wave and

λ is defined as the  wavelength of the wave.

We know that value of c=3×10⁸m/sec and we have v=20Hz

Therefore,3×10⁸=20×λ

=>λ=(3×10⁸)/20

=>λ=0.15×10⁸m

Hence, wavelength of wave is 0.15×10⁸m.

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The vertical component of the tensions in each rope is 50 N.

Weight of traffic light = w = 100N

The angle at which the ropes are supported = θ = 30

After drawing Free Body Diagram,

The vertical component of tension in each rope =

= 2 X T X sinθ = w

= 100 = 2 X T X sin30

= T = 100 / ( 2 X sin30)

= T = 100 N

Now, tension on vertical component =  

= Tsin30

= 100 X 0.5

= 50 N

The term free body is usually associated with the motion of a free body diagram, a pictorial device used by physicists and engineers. In that context, a body is said to be "free" when it is singled out from other bodies for the purposes of dynamic or static analysis.

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