A charged body is suspended from a fixed point which has same charge in opposite magnitude using a 1m long string. The body can move in a circular path in the vertical plane. What minimum initial velocity must the body have to complete the full circle around the point of suspension?I am not able to apply work-energy theorem or energy conservation. Also, no condition is defined - you cannot assume tension at any point to be 0 because the body is in circular motion for the entire period, so tension must figure in the calculations for centripetal force.

bala s , 12 Years ago

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