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A ball of mass $\mathrm{m}$ suspended from a rigid support by an inextensible massless string is released from a height $\mathrm{h}$ above its lowest point. At its lowest point it collides elastically with a block of mass $2 \mathrm{~m}$ at rest on a frictionless surface. Neglect the dimensions of the ball and the block. After the collision the ball rises to a maximum height of $-$
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Verified Answer
The correct answer is:
$\mathrm{h} / 9$
Using energy conservation and law of restitution and momentum conservation
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