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When a body rolls down, it has linear acceleration in downward direction. The friction, therefore, acts upward to counter sliding tendency as shown in the figure. This friction constitutes an anticlockwise torque providing the corresponding angular acceleration as required for maintaining the condition of rolling (if linear velocity is increasing, then angular velocity should also increase according to equation of accelerated rolling). Rolling down an incline
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submitted by magiclko (4210 m) on 29 May 2007 16:30:13 IST (6 comments 266 views)
