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A uniform solid cylinder of radius R=20c...

A uniform solid cylinder of radius R=20cm rolls over a horizontal plane and passes on to an inclined plane meeting the horizontal plane at angle `alpha=30^(@)` with the horizontal. Find the maximum value of velocity `v_(0)` which still permits the cylinder to roll into the inclined plane without a jump. Assume sliding to be absent.

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The correct Answer is:
`sqrt(1/3gR(7 cosalpha-4))`
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