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If rotational kinetic energy is 50% of ...

If rotational kinetic energy is `50% ` of translational kinetic energy, then the body is

A

Ring

B

Cylinder

C

Hollow sphere

D

Solid sphere

Text Solution

Verified by Experts

The correct Answer is:
B
`K_(R)= (1)/(2) K_(T)`
`rArr (1)/(2) mv^(2) ((K^(2))/(R^(2)))= (0.5) (1)/(2) mv^(2)`
`rArr K^(2)= 0.5 R^(2)= (R^(2))/(2)`
Solid cylinder or disc.
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