Two block A and B of masses m and `2m` respectively are connected by a spring of spring cosntant k. The masses are moving to the right with a uniform velocity `v_(0)` each, the heavier mass leading the lighter one. The spring is of natural length during this motion. Block B collides head on with a thrid block C of mass `2m`. at rest, the collision being completely inelastic. The velocity of block B just after collision is -A. `v_(0)`B. `(v_(0))/(2)`C. `(3v_(0))/(5)`D. `(2v_(0))/(5)`

Two block A and B of masses m and `2m` respectively are connected by a

1.	Two block A and B of masses m and `2m` respectively are connected by a spring of spring cosntant k. The masses are moving to the right with a uniform velocity `v_(0)` each, the heavier mass leading the lighter one. The spring is of natural length during this motion. Block B collides head on with a thrid block C of mass `2m`. at rest, the collision being completely inelastic. The velocity of block B just after collision is -A. `v_(0)`B. `(v_(0))/(2)`C. `(3v_(0))/(5)`D. `(2v_(0))/(5)`
Answer» Correct Answer - (B) by applying conservation of linear momentum `2mv_(0) = (2m + 2m)v rArr v = (v_(0))/(2)`

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