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General
Easy

Question

Two blocks A and B are attached to the two ends of a spring having leagth L and force consiant k on a horizontal surface. Initially the systen is in equilhium. Now a third block having same mass m, moving with velocity v collides with block A. Ln this situation........

  1. During maximum contraction of the spring, the kinetic energy of the system A-B will be zero.    
  2. During maximum contraction of the spring, the kinetic energy of the system A-B will be my 2divided by 4    
  3. Maximum contraction of the spring is v square root of fraction numerator m over denominator k end fraction end root    
  4. Maximum contraction of the spring is v square root of fraction numerator 2 m over denominator k end fraction end root    

The correct answer is: During maximum contraction of the spring, the kinetic energy of the system A-B will be my 2divided by 4

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