A mass of $100\, gm$ is tied to one end of a string $2 \,m$ long. The body is revolving in a horizontal circle making a maximum of $200$ revolutions per min. The other end of the string is fixed at the centre of the circle of revolution. The maximum tension that the string can bear is .......... $N$. (approximately)
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(d) Maximum tension$ = m{\omega ^2}r$= $m \times 4{\pi ^2} \times {n^2} \times r$
By substituting the values we get Tmax $ = 87.64\,N$
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