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    Rotational Energy on a solid disk

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    A uniform, solid disk with mass m and radius R is pivoted about a horizontal axis through its center. A small object of the same mass m is glued to the rim of the disk.

    If the disk is released from rest with the small object at the end of a horizontal radius, find the angular speed when the small object is directly below the axis.

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    https://brainmass.com/physics/torques/rotational-energy-solid-disk-133691

    Solution Preview

    Please see the attached file.

    Q. A uniform, solid disk with mass m and radius R is pivoted about a horizontal axis through its center. A small object of the same mass m is glued to the rim of the disk.

    If the disk is released from rest with the small object at the end of a horizontal radius, find the angular speed when the small object is directly below the axis.

    Answer:
    Understanding of the problem and different ways of obtaining solution:

    The above figures show an initial and the final position of the small mass m.

    Consider some intermediate ...

    Solution Summary

    The solution calculates the angular speed and energy of a solid disk.

    $2.49

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