Question: Part A A heavy solid disk rotating freely and slowed only by friction applied at its outer edge takes 8 0 seconds to come to

Part A
A heavy solid disk rotating freely and slowed only by friction applied at its outer edge takes 80 seconds to come to a stop. If the disk had twice the radius and twice the mass, but the frictional force remained the same, the time it would it take the wheel to come to a stop from the same initial rotational speed is
640 s
20 s
320 s
80 s
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Part A A heavy solid disk rotating freely and

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