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Two blocks A (5kg) and B(2kg) attached t...

Two blocks A (5kg) and B(2kg) attached to the ends of a spring constant 1120 N/m are placed on a smooth horizontal plane with the spring undeformed. Simultaneously velocities of 3m/s and 10m/s along the line of the spring in the same direction are imparted to A and B then

A

when the extension of the spring is maximum the velocities of A and B are zero.

B

the maximum extension of the spring is 25 cm

C

maximum extension and maximum compression occur alternately

D

the maximum compression occur for the first time after `(pi)/(56)` sec

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The correct Answer is:
B, C
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