1. When a car goes around a turn at constant speed, how much work is done by the centripetal force? Justify your answer.
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Q: Tom olan llad laoon ob saso doidw al te) 2, A rock is being twirled around in a circle on a…
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Q: How to solve this problem using the energy method? Like with potential energy and kinetic energy?
A: The expression of the speed from conservation of energy,
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A: Coefficient of friction μ= 0.250 Mass (m) = 10 kg
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A: Given :- mass of airplane = m0 = 2.50 kgSpeed of airplane = v = 18.0 m/sRadius of circular path = r=…
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A: (8) The given data are: r=0.16 mW=402 J Here, r denotes the radius and W denotes the workdone.
Q: 2
A: The expression for the work done by the static friction is, W=fscosθ Here, θ is the angle between…
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Q: 10) A skier of mass 82.4 kg starts his run from rest. The skier drops 155 m vertically while skiing…
A: Given: Mass of skier, m=82.4 kg Initial height, H=155 m Final height, h=0 speed at bottom, v=10.0…
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- 1- An object is constrained to move inside a vertical ring near the surface of Earth as shown in the picture. Answer the following questions: What are the forces acting on the object b) is the work done by each force zero, positive or negativel S1A 70 kg secret agent skis down a hill and grabs a 200 kg bag then flies off a 12 m high cliff. The hill can be considered a 1/4 of a circle with a radius of 20 m. a) The initial mechanical energy of the agent at the top of the hill is 14,560 J relative to the location of the bag. If the average force of friction is 120 N determine the velocity of the agent before he picks up the bag. B) what is his apparent weight right before he picks up the bag? C) how fast is the agent traveling after he grabs a bag? D) how far from the base of the cliff does the agent land? Assume the resistance is negligible. E) Assume that the agent in his bag come to rest upon colliding with the ground at the base of the cliff. What is an impulse that he in the bag experiences? Estimate the resulting contact force on the agent. Discuss the likelihood of his living through the collision.
- Can a centripetal force ever do work on an object? Yes NoA rock is attached to an end of a 0.80 m rope. You whirl the 2.0 kg rock in a circle while holding m the other end of the rope. If it moves at a constant speed of 6.0 -, what is the work done on S the rock for every revolution it makes? O 90 J zero 72 J O 16 JA toy plane with a mass of 0.85 kg is tied to a string and made to travel at a speed of 24 m/s in a horizontal circle with a 18 m radius. The person holding the string pulls the plane in, increasing the tension in the string, increasing the speed of the plane and decreasing the radius of the plane's orbit. ON Newtons (N) Scale records tension What is the net work done (in J) on the plane if the tension in the string increases by a factor of four and the radius decreases to 12 m. J