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A ring of mass M hangs from a thread and...

A ring of mass `M` hangs from a thread and two beads of mass `m` slides on it without friction. The beads are released simultaneously from the top of the ring and slides down in opposite sides. Show that the ring will start to rise, if `mgt(3M)/(2)`

Text Solution

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The correct Answer is:
A, B, C

at `alpha=cos^(-1)((2)/(3))` balls will leave contact with inner wall and came in contact with outer wall then force on ring will be `2N cos alpha` in upward direction.

So ring will start rising as it is massless .
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