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A CD with a Diameter Of 12.0 cm12.0 \mathrm{~cm} Starts from Rest and with a Constant Angular Acceleration Of Rest

Question 20

Multiple Choice

A CD with a diameter of 12.0 cm12.0 \mathrm{~cm} starts from rest and with a constant angular acceleration of 1.00rad/sec21.00 \mathrm{rad} / \mathrm{sec}^{2} acquires an angular velocity of 5.00rad/sec5.00 \mathrm{rad} / \mathrm{sec} . The CD\mathrm{CD} continues rotating at 5.00rad/sec5.00 \mathrm{rad} / \mathrm{sec} for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular acceleration. What is the angular distance traveled by a point 4.00 cm4.00 \mathrm{~cm} from the center, at the time 25.0 seconds from the start?


A) 205rad205 \mathrm{rad}
B) 237rad237 \mathrm{rad}
C) 193rad193 \mathrm{rad}
D) 274rad274 \mathrm{rad}
E) 107rad107 \mathrm{rad}

Correct Answer:

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