UPSC General Studies Sample Paper General Studies Sample Paper-6

  • question_answer
    A spherical body moves with a uniform angular velocity around a circular path of radius.
    1. The body has no acceleration.
    2. The body has a radial acceleration \[{{v}^{2}}r\] directed towards the centre of the path.
    3. The body has a radial acceleration 2/5 \[{{v}^{2}}r\] directed away from the centre of the path.
    4. The body has an acceleration \[{{v}^{2}}r\] tangential to the path.
    Which of the statement(s) given above is/are correct?

    A)  3 and 4           

    B)  Only 1

    C)  Only 2             

    D)  None of these

    Correct Answer: C

    Solution :

    [c] Statement 1 is incorrect as when a body moves with the H uniform angular velocity v there is an acceleration. Statement 2 is correct. The body has a radial acceleration towards the centre of the path. When a body moves in c straight line with constant velocity then there is an acceleration. Statement 3 and Statement 4 are incorrect.    


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