Question

A round rock of mass 500kg and radius 5m is balanced on the top of a...

A round rock of mass 500kg and radius 5m is balanced on the top of a hill. What force will you have to apply at its middle to make the rock fall down the hill? (draw a diagram and write down the equations you use)

Science   Advanced-Physics   
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Answer #1

For this Problem,Considering the round rock as solid sphere.

Hence the moment of inertia of solid sphere is used in the given solution.

For the rock there will be 2 forces namely Force of friction and applied force in the x direction.

In vertical direction there will be 2 forces namely Weight and normal force from Ground/Hill.

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