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A small stone of mass 50 g is rotated in a vertical circle of radius 40 cm.What is the minimum tension in the string at the lowest point?

 A small stone of mass 50 g is rotated in a vertical circle of radius 40 cm.What is the minimum tension in the string at the lowest point? 

Grade:12th pass

1 Answers

Pratap
askIITians Faculty 34 Points
4 years ago
Look for minimum speed at the lowest point required for the motion of stone in verticle circle. For minimum tension at the lowest point, add the weight of the stone and the centrifugal force here i.e. T = mg +(mv^2)/r, you need to find v.

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