Question

If angular velocity of body rotating about an axis is double and its moment of inertia half the rotation kinetic energy will change bhaiya

Answer 1

kinetic energy is doubled.

Answer 2

Answer:

The rotational kinetic energy will become two times its initial value.

Explanation:

• The rotational kinetic energy is directly proportional to the moment of inertia and square of the angular velocity
• If the moment of inertia increases, rotational kinetic energy also increases
• If angular velocity increases, rotational kinetic energy also increases
• If the angular velocity doubles, the rotational kinetic energy will increase by 4 times
• If the moment of inertia becomes half of its initial value, the rotational kinetic energy will become half of its initial value
• So the net change of doubling angular velocity and halving the moment of inertia is that the rotational kinetic energy becomes twice its initial value.

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