SOLUTION: A truck with 54-in.-diameter wheels is traveling at 45 mi/h.
How many revolutions per minute do the wheels make?
PLEASE HELP ME
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Question 1014118: A truck with 54-in.-diameter wheels is traveling at 45 mi/h.
How many revolutions per minute do the wheels make?
PLEASE HELP ME
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
1) The truck travels 45 / 60 = 3/4 mile per minute or 3/4 * 5280 = 3960 feet per minute.
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2) Diameter of wheel is 54/12 = 4.5 feet.
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3) circumference of the wheel is 4.5 * pi = 9/2 * 22/7 = 14.142857143 approx 14.14 feet
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5) number of revolutions per minute for a wheel is 3960 / 14.14 = 279.99 = 280 revolutions
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Note that you did not say how many wheels the truck has so I could only do the calculation for one wheel.
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