A disk of mass M is spinning freely at 7.69 rad/s when a second identical disk, initially not spinning, is dropped onto it so that their axes coincide. In a short time the two disks are corotating. HINT (a) What is the angular speed of the new system (in rad/s)? rad/s (b) If a third such disk is dropped on the first two, find the final angular speed of the system (in rad/s).

Principles of Physics: A Calculus-Based Text
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Chapter10: Rotational Motion
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A disk of mass M is spinning freely at 7.69 rad/s when a second identical disk, initially not spinning, is dropped onto it so that their axes coincide. In a short time
the two disks are corotating.
HINT
(a) What is the angular speed of the new system (in rad/s)?
rad/s
(b) If a third such disk is dropped on the first two, find the final angular speed of the system (in rad/s).
rad/s
Transcribed Image Text:A disk of mass M is spinning freely at 7.69 rad/s when a second identical disk, initially not spinning, is dropped onto it so that their axes coincide. In a short time the two disks are corotating. HINT (a) What is the angular speed of the new system (in rad/s)? rad/s (b) If a third such disk is dropped on the first two, find the final angular speed of the system (in rad/s). rad/s
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