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Tension in a String

A stone is at...

Question

A stone is attached to one end of a string and rotated in a vertical circle. If spring breaks at the position of maximum tension, it will break at

A

4

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B

6

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C

7

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D

3

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Solution

The correct option is B $6$
It will break at the lowest point.Because at the lowermost position the tension is atleast 6x it's weight.i.e., 6mg

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