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An ideal tape of length L is tightly wou...

An ideal tape of length L is tightly wound on a cylinder. The tape is allowed to unwind as the cylinder slips down a frictionless inclined plane. The upper end of the tape is fixed to a point P as shown in the figure. Find the time taken by the tape to unwind completely. Assume that plane is very long

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The correct Answer is:
`sqrt((3L)/(g sin theta))`
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