Asked by Anonymous

a wind mill is used to generate electricity. the wind mill has propeller blades that are 12 feet in length. if the propeller is rotating at 3 revolutions per second, what is the linear speed in feet per seconds of the tips of the blades?

Answers

Answered by Steve
r=12
C = 2πr

3 rev/min * 24π ft/rev * 1min/60s = 72π/60 = 6π/5 ft/s
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