A stone of mass 0.2 kg is tied to one end of a thread of length 0.1 m and whirled in a vertical circle. When the stone is at the lowest point of the circle, the tension in the thread is 52 N, then the velocity of the stone will be:
1
4 m/s
2
5 m/s
3
6 m/s
4
7 m/s
5
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