2. Solved Papers
  3. BHU PMT

BHU PMT BHU PMT (Screening) Solved Paper-2008

  • question_answer
    When the bob of a simple pendulum swings, the work done by tension in the string is

    A)  \[>0\]                                  

    B)  \[<0\]

    C)  zero                                     

    D)  maximum

    Correct Answer: C

    Solution :

                     Tension in the string is along the radius of circular path adopted by the bob, while displacement of the bob is along the circumference of the path. Hence, again\[\overrightarrow{F}\] and\[\overrightarrow{S}\] are at\[90{}^\circ \]and so, \[W=0,\]


You need to login to perform this action.
You will be redirected in 3 sec spinner