A 10.0 kgblock is dragged over a rough, horizontal surface by a 84.0 N force acting at 20.0° above thehorizontal. The block is displaced 6.00 m, and the coefficient of kinetic friction is0.300.
(a) Find the work done on the block by the 84.0 N force.
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(b) Find the work done on the block by the normal force.
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(c) Find the work done on the block by the gravitational force.
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(d) What is increase in internal energy of the block-surface systemdue to friction?
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(e) Find the total change in the block's kinetic energy.
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