Angular momentum of body changes by 80 kg `m^(2)//s`, when its angular velocity changes from 20 rad/s to rad/s. Then the change in its kinetic energy isA. 1200 JB. 1800 JC. 1600 JD. 2400 J

Angular momentum of body changes by 80 kg `m^(2)//s`, when its angular

1.	Angular momentum of body changes by 80 kg `m^(2)//s`, when its angular velocity changes from 20 rad/s to rad/s. Then the change in its kinetic energy isA. 1200 JB. 1800 JC. 1600 JD. 2400 J
Answer» Correct Answer - D `L_(2)-L_(1)=I(omega_(2)-omega_(1))` `KE_(2)-KE_(1)=(1)/(2)I(omega_(2)^(2)-omega_(1)^(2))`

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Angular momentum of body changes by 80 kg `m^(2)//s`, when its angular velocity changes from 20 rad/s to rad/s. Then the change in its kinetic energy isA. 1200 JB. 1800 JC. 1600 JD. 2400 J

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