Q. 143.7( 3 Votes )

A mass of 5 kg is A. 250π2

B. 100π2

C. 5π2

D. 0

Answer :

Given, m=5kg, r=1m, frequency of revolution, f =300re/min


Kinetic energy=


angular velocity =


=


= (300× 2× 3.14) rad/60s


= rad/s


=


We know that v=wR


=


=


Kinetic energy=


=

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