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Question

A 4 kg swing in a vertical circle at the end of the chord 1 m long. Find out the maximum speed at which it can swing if chord can sustain maximum tension of 140 N.

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Solution

We know that maximum tension in vertical circular motion is at the bottom position where we get
TMg=FC=Mv2r , here Fc=centripetal force
(TMg)×rM=v2
v2=(14040)×14=25
v=5m/s

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