Starting from rest, a 12-cm-diameter compact disk takes 3.5 s to reach its operating angular velocity of 1600 rpm. Assume that the angular acceleration is constant. The disk's moment of inertia is 2.5 x 10- kg m². Part A How much torque is applied to the disk? Express your answer to two significant figures and include the appropriate unit ? Value Units Submit Reguest Answer Part B How many revolutions does it make before reaching full speed? Express your answer using two significant figures. ΑΣή

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22
Starting from rest, a 12-cm-diameter compact disk takes 3.5 s to reach its operating angular velocity of
1600 rpm. Assume that the angular acceleration is constant. The disk's moment of inertia is
2.5 x 10-5 kg m?.
Part A
How much torque is applied to the disk?
Express your answer to two significant figures and include the appropriate units.
HẢ
?
Value
Units
T=
Submit
Request Answer
Part B
How many revolutions does it make before reaching full speed?
Express your answer using two significant figures.
?
N =
rev
Submit
Request Answer
Provide Feedback
Transcribed Image Text:22 Starting from rest, a 12-cm-diameter compact disk takes 3.5 s to reach its operating angular velocity of 1600 rpm. Assume that the angular acceleration is constant. The disk's moment of inertia is 2.5 x 10-5 kg m?. Part A How much torque is applied to the disk? Express your answer to two significant figures and include the appropriate units. HẢ ? Value Units T= Submit Request Answer Part B How many revolutions does it make before reaching full speed? Express your answer using two significant figures. ? N = rev Submit Request Answer Provide Feedback
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