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A uniform disk of mass 371 kg and radius 0.19 m is mounted on frictionless bearings...

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Physics

A uniform disk of mass 371 kg and radius 0.19 m is mounted onfrictionless bearings so it can rotate freely around a verticalaxis through its center (see the following figure). A cord iswrapped around the rim of the disk and pulled with a force of 10 N.What is the angular velocity (in rad/s) at the instant the disk hascompleted four revolutions. The disk starts from rest.

Group of answer choices

3.78 rad/s

3.87 rad/s

2.35 rad/s

2.53 rad/s

Answer & Explanation Solved by verified expert
4.2 Ratings (672 Votes)
Answer Angular velocity ExplanationDistance covered in 4 revolutions Work done    See Answer
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