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+1 vote
12.1k views
in Physics by (40.4k points)

A rod of mass M and length L is lying on a horizontal frictionless surface. A particle of mass 'm' travelling along the surface hits at one end of the rod with a velocity 'u' in a direction perpendicular to the rod. The collision is completely elastic. After collision, particle comes to rest. The ratio of masses (m/M) is 1 x . The value of 'x' will be ______.

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1 Answer

+3 votes
by (38.5k points)

Answer is 4

Just after collision

From momentum conservation, \(P_i^0=P_r\)

mu = Mv....(i)

From angular momentum conservation about O,

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