1.

A body having a moment of inertia about its axis of rotation equal to 3 kg m^(-2) is rotating with angular velocity of 3 rad s^(-1). Kinetic energy of this rotating body is same as that of a body of mass 27 kg moving with velocity v. The value of v is

Answer»

`1ms^(-1)`
`0.5 MS^(-1)`
`2MS^(-1)`
`1.5 ms^(-1)`

SOLUTION :`(1)/(2) mv^(2) = (1)/(2) I OMEGA^(2)`
`(1)/(2) xx 27 xx v^(2) = (1)/(2) xx 3 xx 3^(2)`
v = 1/s


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