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Length AB in figure is 5 m. The body is ...

Length AB in figure is 5 m. The body is released from point C. Friction is sufficient for pure rolling to take place. The maximum time which anybody (out of ring, disc, sphere, cylinder) can take to reach bottom is ____ sec. [ `g = 10 ms^(-2)`]

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The correct Answer is:
2
Maximum time will be taken by ring as it rolls with minimum acceleration
`a = g (sin theta)/(2) = 2.5 m//s^2, t = sqrt((2s)/a) = sqrt((2xx5)/(2.5)) = 2"sec"`.
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