A bob is whirled in a horizontal plane by means of a string with an initial speed of $\omega$ rpm. The tension in the string is $T$. If speed becomes $2\,\omega$ white keeping the same radius, the tension in the string becomes;

Question

Dr. Abubacker · Accepted Answer

[Solution by Claude - not from source] $T=m\omega^2r\propto\omega^2$, so doubling the speed gives $4T$. Answer (4).

Q. A bob is whirled in a horizontal plane by means of a string with an initial speed of $\omega$ rpm. The tension in the string is $T$. If speed becomes $2\,\omega$ white keeping the same radius, the tension in the string becomes;

Explanation

Reviewed by Dr. Abubacker

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