Belt Auction

apprenticeship question: What is the speed (in mph) of a V-belt as it goes around a 34 ft dia pulley?

spinning at 75 rpm ? I figured out (34)(pi)(75)(60) gives me linear ft /hr. So dividing that by 5280ft/mi should give me the answer. But just over 9mph seems a little slow. Is this right?

Public Comments

1. You have calculated it correctly, but you're off by a factor of 10. (34 ft/rev)(pi)(75 rev/min)(60min/hr)(1mi/5280ft) = 90.9886mi/hr = 91 mi/hr