Two blocks A and B, each of mass m, are connected by a masslesss spring of natural length L and spring constant K. The blocks are initially resting on a smooth horizontal floor with the spring at its natural length, as shown in fig. A third identical block C, also of mass m, moves on the floor with a speed v along the line joining A and B, and collides elastically with A. Then A. `v sqrt((m)/(2k))`B. `m sqrt((v)/(2k))`C. `sqrt((mv)/(2k))`D. `(mv)/(2k)`

Two blocks A and B, each of mass m, are connected by a masslesss sprin

1.	Two blocks A and B, each of mass m, are connected by a masslesss spring of natural length L and spring constant K. The blocks are initially resting on a smooth horizontal floor with the spring at its natural length, as shown in fig. A third identical block C, also of mass m, moves on the floor with a speed v along the line joining A and B, and collides elastically with A. Then A. `v sqrt((m)/(2k))`B. `m sqrt((v)/(2k))`C. `sqrt((mv)/(2k))`D. `(mv)/(2k)`
Answer» Correct Answer - A `mv = (m + m) v^(1)` and `(1)/(2) (m+m) (v^(1))^(2) = (1)/(2) kx^(2)`.

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