1.

Two bodies have their moments of inertia l and 2l respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular velocity will be in the ratio

Answer»

`2:1`
`1:2`
`SQRT2:1`
`1:sqrt2`

SOLUTION :K.E. =`1/2Iomega^(2)`
`therefore1/2Iomega_(1)^(2)=1/2.2Iomega_(2)^(2)`
`(omega_(1)^(2))/(omega_(2)^(2))=2/1rArr(omega_(1))/(omega_(2))=(sqrt2)/1`


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