A boy ties a stone of mass 100 g to the end of a 2 m long string and whirls it around in a horizontal plane. The string can withstand the maximum tension of 80 N. If the maximum speed with which the stone can revolve is 
rev. / min. The value of K is: (Assume the string is massless and un stretchable)
Text Solution
Verified by ExpertsThe correct answer is:
C
T=80N M=0.1 
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