JEE Main 24 June 2022 Shift 1 Solved Paper

A boy ties a stone of mass 100g to the end of a 2m long string and whirls it around in a horizontal plane. The string can withstand the maximum tension of 80N. If the maximum speed with which the stone can revolve is ‌

K

π

‌rev.∕min. The value of K is :
(Assume the string is massless and unstretchable)