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Two blocks A and H. each of mass m, are ...

Two blocks `A` and `H`. each of mass `m`, are connected by a massless spring of natural length `I`. and spring constant `K`. The blocks are initially resting in 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

the kinetic energy of the A B system, at maxi¬ mum compression of the spring, is zero.

B

the kinetic energy of the A-B system, at maxi¬ mum compression of the spring, is tnv2 /4

C

the maximum compression of the spring is vMm/.k)

D

the maximum compression of the spring is vj(m/2k).

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