Direction of rotation

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You have finished watching a movie on Blu-ray and the disc is slowing
to a stop. The disc’s angular velocity at t = 0 is 27.5 rad/s, and its
angular acceleration is a constant -10.0 rad/s2. A line PQ on the disc’s
surface lies along the +x-axis at t = 0 (Fig.). (a) What is the disc’s
angular velocity at t = 0.300 s? (b) What angle does the line PQ make
with the +x-axis at this time?

Direction
of rotation
Transcribed Image Text:Direction of rotation
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