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Hi Jason. A "revolution" would be the length of the circumference of the pulley. Pulleys are usually measured by their diameter, so your pulley revolvesonce in 7π inches. Now you have a linear conversion. From ft/sec you can convert to rev/sec by dividing by the circumference. Then you can multiply by 60 to convert rps into rpm, since there are 60 seconds in a minute. Hope this helps,  


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