Kinetic energy and angular velocity of a...

Kinetic energy and angular velocity of a rigid body are E and `omega` respectively. Now angular velocity of the body is increased by 2%. Find out kinetic energy.

`1.03E`

`1.08E`

`1.02E`

`1.04E`

Text Solution

Verified by Experts

The correct Answer is:

Rotational kinetic energy `E=(1)/(2)Iomega^(2)` here
`omega.=1.02omega`
`therefore E.=(1)/(2)I(omega.)^(2)=(1)/(2)I(1.02omega)^(2)`
`therefore E.=1.04E`

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