Starting from rest, a 12-cm-diameter compact disk takes 3.5 s to reach its operating angular velocity of 2000 rpm. Assume that the angular acceleration is constant. The disk's moment of inertia is 2.5 x 10-5 kg m². Part A How much torque is applied to the disk? Express your answer to two significant figures and include the appropriate units.

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Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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Part B:

How many revolutions does it make before reaching full speed?
Express your answer in revolutions using two significant figures.

 

Starting from rest, a 12-cm-diameter compact disk
takes 3.5 s to reach its operating angular velocity of
2000 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=
Transcribed Image Text:Starting from rest, a 12-cm-diameter compact disk takes 3.5 s to reach its operating angular velocity of 2000 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=
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