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  3. RAJASTHAN PMT

RAJASTHAN PMT Rajasthan - PMT Solved Paper-1997

  • question_answer
    Angular momentum is constant in absent of external.

    A)  force                   

    B)         torque

    C)         both a and b 

    D)         inertia

    Correct Answer: B

    Solution :

    Torque \[\tau =\frac{\overrightarrow{dL}}{dt}\] Where L = angular momentum If \[\tau =0\] then \[\frac{\overrightarrow{dL}}{dt}=0\] \[\therefore \]  \[\overrightarrow{L}\] = constant So, angular momentum is constant in absence of torque.


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