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Q1. A 3.00 kg block starts from rest at the top of a 28.5° incline and slides 2.00 m down the incline in 1.20 s.
(a) Find out the acceleration of the block.
(b) Find out the coefficient of kinetic friction between the block and the incline.
(c) Find out the frictional force acting on the block.
(d) Find out the speed of the block after it has slid 2.00 m.
Q2. While rearranging a dorm room, a student does 276 J of work in moving a desk 1.7 m. What was the magnitude of applied horizontal force?
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A spring with spring constant 14 hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 3.0 and released. The ball makes 17 oscillations in 16 seconds. What is it the mass of ball.
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A 1.65 block is attached to a spring with spring constant 17. While the block is sitting at rest, a student hits it with the hammer and almost instantaneously gives it a speed of 59.
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