SOLUTION: A truck with 48-in.-diameter wheels is traveling at 50 mi/h. Find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes: How many r

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Question 1203364: A truck with 48-in.-diameter wheels is traveling at 50 mi/h.
Find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes:

How many revolutions per minute do the wheels make?

Answer by ikleyn(52776) About Me  (Show Source):
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A truck with 48-in.-diameter wheels is traveling at 50 mi/h.
Find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes:

How many revolutions per minute do the wheels make?
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1 mile = 5280 feet = 5280*12 inches = 63360 inches.


The wheel circumference is pi%2A48 inches = 3.14159265*48 inches = 150.7964472 inches.


The number of revolutions of the wheel per minute is  rpm = %28%28%2863360%2A50%29%2F60%29%29%2F150.7964472 = 350.1408752.

Solved.

The formulas are self-explanatory.