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The angular speed of a large pulley wheel that has a radius of 15, is 50 revolutions/min. Find the angular speed and the rim speed of the smaller wheel that has a radius of 5.

The rim speed is going to be the same.
I got the angular speed but I can't figure out why the rim speed is 4700 cm/min.

= 4700cm/min

where did you get the 2Plrad?

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