Question 698083: A flywheel of radius 10 cm is turning at the rate 900 r/min. How fast does a point on the rim travel in m / s ?
Answer by lwsshak3(11628)   (Show Source):
You can put this solution on YOUR website! A flywheel of radius 10 cm is turning at the rate 900 r/min. How fast does a point on the rim travel in m / s ?
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rev=revolutions
r=radius
circumference=2πrcm=20πcm
..
900 rev/min*circumference/rev*min/60sec
900 rev/min*20πcm/rev*min/60sec*m/100cm
rev, min, cm, cancel out, leaving:
900*20π m/60*100 sec
18000π/6000 m/sec
3π m/sec
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