Discussion-14

# Discussion-14 - Angular AngularKinematics Discussion#14...

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ngular Kinematics Angular Kinematics Discussion #14 – Ch. 8 Physics 125–Fall 2010 Dr. Mike Melnichuk Office: 2409 Randall Lab ffice Hours: 2:00 :00 / Mon Rm 1416 Randall Lab in Rm. 1416 Randall Lab.

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Example #1 You have just finished watching a movie on DVD and the disc is slowing to a stop. The angular velocity of the disc at t = 0 s is 27.5 rad/s and its angular acceleration is a constant -10.0 rad/s^ 2 . Consider a line PQ on the surface of the disc which lies d along the +x axis at t = 0 s. What is the disk’s angular velocity at t = 0.3 s? rad A. 31.8 s rad B. 16.2 s rad 2 45 C. 24.5
You have just finished watching a movie on DVD and the disc is slowing to a stop. The angular velocity of the disc at t = 0s is 27.5 rad/s and its angular acceleration is a constant -10.0 rad/s^ 2 . Consider a line PQ on the surface of the disc which lies along the +x axis at t = 0s. Through what angle has the line PQ rotated during the 0.3 s ? A. 3.4 rad

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Discussion-14 - Angular AngularKinematics Discussion#14...

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