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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2002

  • question_answer
    The two particles A and B remain at rest position. Both of them due to their attraction forces move towards each other. At any instant the velocity of A is v. At that instant velocity of B is 2v. The velocity of centre- of mass of the system will be

    A)  v                  

    B)  zero

    C)  1.5 v              

    D)  3v

    Correct Answer: B

    Solution :

     Because external force is not acting upon the particles and centre of mass does not move by internal forces. So, the motion of centre of mass will be zero.


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