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Question: Two bodies with moment of inertia I1 and I2 (such that I1\>I2) have equal angular velocity. If their...

Two bodies with moment of inertia I1 and I2 (such that I1>I2) have equal angular velocity. If their kinetic energy of rotation are E1 and E2 then:

A

E1 ³ E2

B

E1 > E2

C

E1 < E2

D

E1 = E2.

Answer

E1 > E2

Explanation

Solution

If angular velocity are equal then

E∝IE \propto I

As I1>I2I _ { 1 } > I _ { 2 } thereforeE1>E2E _ { 1 } > E _ { 2 }