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A stone of mass 0.3 kg tied to the end o...

A stone of mass 0.3 kg tied to the end of a string in a horizontal plane whirled in a circle of radius 1 m with a speed of `40 "rev min"^(-1)`. (i) What is the tension in thr string ? (ii) What is the maximum speed with which the stone can be whirled around if the string can withstand the maximum tension of 200 N ?

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