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Question

A particle of mass m =2 kg is suspended by a string of length l =1m is whirled in a vertical circle about point O. The particle is given a horizontal velocity of 10 m/s at lowest point. The centripetal or normal acceleration of particle at highest point is an=10pm/s2. Find the value of p.___

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Solution

TL=Mg+mv2LlvL=10m/sMg+TH=MV2HL12MV2L=2MgL+12MV2H;MV2H=60an=V2H=10×6m/s2P=6

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