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Rotational Motion question

2007 · Shift 1 · Q58

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PYQ Library
JEE Advanced
Physics
Rotational Motion
2007 · Shift 1 · Q58

Rotational Motion question

2007 · Shift 1 · Q58

JEE AdvancedPhysicsRotational MotionMCQ+3 / −1

Two discs

A

and

B

are mounted coaxially on a vertical axle. The discs have moment of inertia

I

and

2 I

respectively about the common axis. Disc

A

is imparted an initial angular velocity

2 \omega

using the entire potential energy of a spring compressed by a distance

x_1

. Disc

B

is imparted an angular velocity

\omega

by a spring having the same spring constant and compressed by a distance

x_2

. Both the discs rotate in the clockwise direction.The loss of kinetic energy during the above process is :

A
$\frac{I\omega^2}{2}$
B
$\frac{I\omega^2}{3}$
C
$\frac{I\omega^2}{4}$
D
$\frac{I\omega^2}{6}$

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