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For shown situation, if collision betwee...

For shown situation, if collision between block A and B is perfectly elastic, then find the maximum energy stored in spring in joules.

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The correct Answer is:
`4 J`
At maximum compression of spring, velocities of block B and C are same (say `v_(0)` )
then by conservation of linear momentum `3(2) = (3 + 6)v_(0) rArr v_(0) = (2)/(3) m//s`
At this instant energy stored in spring `= (1)/(2)(3)(2)^(2) -(1)/(2)(3 + 6)((2)/(3))^(2) = 6 - 2 = 4 J`
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ALLEN -CENTRE OF MASS-EXERCISE-V B
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  11. Satement-1: if there is no external torque on a body about its centre ...

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  12. A small block of mass M move on a frictionless surface of an inclimed...

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  14. A small block of mass M move on a frictionless surface of an inclimed...

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