A body of mass `m` slides down an incline and reaches the bottom with a velocity `v`. If the same mass were in the form of a ring which rolls down thi
A body of mass `m` slides down an incline and reaches the bottom with a velocity `v`. If the same mass were in the form of a ring which rolls down this incline, the velocity of the ring at the bottom would have been
A. v
B. `v/sqrt2`
C. `sqrt2 v`
D. `(sqrt2)/(5)v`
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Correct Answer - B
`E_(1)=E_(2)`
`(1)/(2)mv^(2)=(1)/(2)m v_(1)^(2)(1+(k^(2))/(R^(2)))`
`therefore v_(1)^(2)=(v)/(2)`
`v_(1)=(v)/(v_(2))`
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