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An object is hung from a spring balance attached to the ceiling of an elevator cab. The balance reads 90 Newton when the elevator is standing still.
(a) Determine the reading when the elevator is moving upward with a constant speed of 8.5 m/s?
N (b) Determine the reading when the elevator is moving upward with a speed of 8.5 m/s while decelerating at a rate of 1.0 m/s2?
N
Two objects with masses of 3.80 kg and 5.40 kg are connected by a light string that passes over a frictionless pulley, Determine the distance each object will move in the first second of motion if both objects start from rest
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Suppose you are climbing up stairs, gaining 10 meters of height per minute. In order to do that, your body has to do some work, using energy, at a given rate. What is the power produced by your body? Ignore energy losses.
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