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One end of a string of length l is conn...

One end of a string of length l is connected to a particle of mass m and the other to a small peg on a smooth horizontal table. If the particle moves in a circle with speed v the net force on the particle (directed towards the centre) is: (i)T,(II) `T-(mv^2)//l,`(iii)`T+(MV^2)/l,`(iv)0

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