Two wheels A and B are touching each other. If the angular velocity of wheel B is 12 rad/s and?

radius of wheel A is equal to 1/4 of radius of wheel B, then the angular velocity of wheel A is???

Answer:

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angular velocity of wheel B is 12 rad/s radius of wheel A is equal to 1/4 of radius of wheel B angular velocity of wheel A is 4 * 12 rad/s 48 rad/s circumference of B 2π r circumference of A 2π r/4 For every 1/4 rotation of B, A rotates once So, A rotates 4 times for every rotation of B Or the angular velocity of A is 4 time the angular velocity of B.