The 20-inch-diameter wheels of one car travel at a rate of 24 revolutions per minute,
1 answer:
One revolution of a wheel is equal to it's circumference:
C = πd
C: circumference
d: diameter
<u>20" wheel</u>
d = 20"
C = (20π) in/rev
v = (24 rev/min)(20π in/rev) = 480π in/min
<u>30" wheel</u>
d = 24"
C = (30π) in/rev
v = (18 rev/min)(30π in/rev) = 540π in/min

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