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A stone of mass 0.25 kg tied to the end of a string is whirled round in a circle of radius 1.5 m with speed 40 rev/min in a horizontal plane. What is the tension in the string and what is the maximum speed with which the stone can be whirled around, if the string can withstand a maximum tension of 200 N?

A

`6.6 N, 35 ms^(-1)`

B

`6N, 37ms^(-1)`

C

`7.5N, 46 ms^(-1)`

D

`8N, 38 ms^(-1)`

Text Solution

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The correct Answer is:
a
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