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Physics
Angular momentum L and rotational kinetic energy KR of a rigid body are related to each other by the relation. (I = moment of inertia)
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Q. Angular momentum L and rotational kinetic energy $K_R$ of a rigid body are related to each other by the relation. ($I$ = moment of inertia)
System of Particles and Rotational Motion
A
$K_R = 2IL$
9%
B
$K_R = \frac{L^2}{2I}$
73%
C
$K_R = \frac{2I}{L}$
13%
D
$K_R = \frac{L^2}{I}$
5%
Solution:
$K_R = \frac{L^2}{2I}$