1.

A stone of mass 1 kg is tied to the end of a string1 m long. It is whirled in a vertical circle. If the veloc-ity of stone at the top be 4 m/s. What is the tensionin the string at the lowest point? Take g-10 m/s2(1) 6 N(3) 16N(2) 66 N(4) 76 N

Answer»

We know that,

Tension= mv²/r-mg

Tension= 1×(16/1)-1×(1×10)

Tension= 6N

The answer is option (a)

Sorry, but the answer is 66 N



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