If angular momentum of a body increased by 200% its kinetic energy will increase by :

Options

A. 4
B. 8
C. 2
D. 1

Answer

B

Explanation

Given: `P_(1)=P," "P_(2)=3P`
`(DeltaK)/(K)=[((P_(2))/(P_(1)))^(2)-1]xx100`
`=[((3P)/(P))^(2)-1]xx100`
`(DeltaK)/(K)=800%`.