Rotational Motion Question 204

Question: Two bodies have their moments of inertia I and 21 respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular momenta will be in the ratio

Options:

A) 2:1

B) 1:2

C) 2:1

D) 1:2

Show Answer

Answer:

Correct Answer: D

Solution:

[d]

K=L22IL2=2KIL=2KI

L1L2=K1K2.I1I2=KK.I2I=12

L1:L2=1:2



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