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A spherical solid ball of 1 kg mass and ...

A spherical solid ball of 1 kg mass and radius 3 cm is rotating about an axis passing through its centre with an angular velocity of 50 rad `s^(-1)`. The kinetic energy of rotation is

A

9/20 J

B

90 J

C

910 J

D

4500 J

Text Solution

Verified by Experts

The correct Answer is:
A
`I=(2)/(5)MR^(2)` and `KE=(1)/(2)I omega^(2)`
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