Two particles A and B, of mass m each, are joined by a rigid massless rod of length l . A particle P of mass m, moving with a speed w normal to AB, strikes A and sticks to it. The centre of mass of 'A + B + P' system is C.
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(a, b, c, d)
As all three particles are part of the system, and impact between them produces no change in the velocity of their centre of mass. Also, ‘A + B’ can exert a force on B only along the rod, i.e., normal to u.
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