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A body of moment of inertia of 3kgm^(2) ...

A body of moment of inertia of `3kgm^(2)` rotating with an angular velocity or 2rad//s has the same kinetic energy as a mass of 12kg moving with a velocity of

A

`1m//s`

B

`2m//s`

C

`4m//s`

D

`8m//s`

Text Solution

Verified by Experts

The correct Answer is:
A
`KE_("rot")=KE_(L)`
`(1)/(2)I omega^(2)=(1)/(2) mv^(2)`
`3xx4=12 v^(2)`
`v^(2)=1`
`v = 1`.
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