Two blocks each of mass m are connected with springs each of force constant fr as shown in the Fig. Initially the springs are relaxed. The mass A is displaced to the left and ^B to the right by the same amount and released, then the time period of oscillation is: 

Two blocks each of mass m are connected with springs each of force constant fr as shown in the Fig. Initially the springs are relaxed. The mass A is displaced to the left and ^B to the right by the same amount and released, then the time period of oscillation is:
 

  1. A

    2πmk

  2. B

    2πm2k

  3. C

    πmk

  4. D

    πm2k

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    Solution:

    After collision the blocks come to rest as moving with equal velocities in opposite directions. So each mass complete half oscillation.
    T'=T2=πmk

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