Answer to Question #78351 in Mechanics | Relativity for Prerana

Question

A rock of mass 500 kg slides down from rest
along a hill slope that is 500 m long and
300 m high and reaches the bottom. The
coefficient of kinetic friction, between the
rock and the hill slope is 0.25. Calculate
(i) the work done on the rock by the
frictional force.

Draw the free body diagram.

Answer 1

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