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IIT-JEE 2009

friction (Question)

nnaas said – Fri, 23 Oct 2009 17:35:29 -0000 ( Edit Link )

during the paddling of bicycle the force of friction exerted by the ground on the wheel is such that it acts in backward direction on the front wheel and in the forward direction on the rear wheel.explain?

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gauravtiwarithegenius said – Tue, 27 Oct 2009 11:38:41 -0000 ( Flag Edit Mark / Unmark Best Link )

when the front wheel is exerting some force on ground then only friction wiil be acting now it is actig in backward direction because friction forces are the forces which opposes motion so if the wheel is moving in forward direction then thefriction force will be in backward direction and vice versa
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aksadit said – Mon, 16 Nov 2009 17:45:35 -0000 ( Flag Edit Mark / Unmark Best Link )

during the motion of bicycle in rear wheel frictional force is in backward as pt. of contact try to be in contact of surface of ground so fs balance the backward motion to keep pt. of contact in touch nd same concept fr front wheel
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