Two identical blocks and , each of mass ‘ ’ resting on smooth floor are connected by a light spring of natural length and spring constant , with the spring at its natural length. A third identical block ‘ ’ (mass ) moving with a speed along the line joining and collides with . The maximum compression in the spring is |
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a) |
b) |
c) |
d) |

Two identical blocks and , each of mass ‘ ’ resting on smooth floor are connected by a light spring of natural length and spring constant , with the spring at its natural length. A third identical block ‘ ’ (mass ) moving with a speed along the line joining and collides with . The maximum compression in the spring is |
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a) |
b) |
c) |
d) |

1 Answer

127 votes

**(a)**

Initial momentum of the system (block

After striking with , the block comes to rest and now both block and moves with velocity , when compression in spring is maximum

By the law of conservation of linear momentum

By the law of conservation of energy

K.E. of block K.E. of system + P.E. of system

127 votes

127