The velocity ratio of two pulleys connected by an open belt or cr

| The velocity ratio of two pulleys connected by an open belt or crossed belt is

A. directly proportional to their diameters

B. inversely proportional to their diameters

C. directly proportional to the square of their diameters

D. inversely proportional to the square of their diameters

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We know that circumferential velocity of the belt on the driving pulley,

& circumferential velocity of the belt on the driven pulley

When there is no slip, then