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NEET Sample Paper NEET Sample Test Paper-80

  • question_answer
    A disc is rotating with angular speed \[\omega \] on a horizontal plane with its axis of rotation perpendicular to plane a passing through its centre. If a fly sits on it, what is conserved?

    A)  Kinetic energy   

    B)  Potential energy

    C)  Linear momentum        

    D)  Angular momentum

    Correct Answer: D

    Solution :

    As a fly sits on a rotating disc, no external torque acts. So, angular momentum of system is conserved.


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