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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