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dlinn [17]
2 years ago
9

Two pulleys, one with a radius 2R and one with a radius of R, are welded together and can rotate about the same axis. A block is

suspended from a string that is wrapped around the small disk and unwinds without slipping as the block descends a distance H and reaches a certain final speed. If the string with the block at the other end were wrapped around the larger disk, how would the final speed of the block change?
Physics
1 answer:
Arisa [49]2 years ago
6 0

Answer:

speed will double

Explanation:

Tangential velocity is given by

v=wr

where r is radius and w is rotational velocity. When r is increased to 2R, keeping roational velocity constant, the tangential velocity doubles. Hence unwinding will take place at a twice the rate and the final velocity will be double

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