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JEE Main & Advanced Physics Rotational Motion Question Bank Mock Test - Dynamics of Rigid Body

  • question_answer
    Two discs, each having moment of inertia \[5\,kg\,{{m}^{2}}\] about its central axis, rotating with speeds 10 rad \[{{s}^{-1}}\] and 20 rad \[{{s}^{-1}}\], are brought in contact face to face with their axes of rotation coincided. The loss of kinetic energy in the process is (in J) ______ .

    Answer:

    125


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