SOLUTION: A truck with 28-in.-diameter wheels is traveling at 60 mi/h. Find the angular speed of the wheels in rad/min:

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Question 1108760: A truck with 28-in.-diameter wheels is traveling at 60 mi/h.
Find the angular speed of the wheels in rad/min:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Convert mi/hr to in/min
[ mi/hr ] x [ ft/mi ] x [ in/ft ] x [ hr/min ]
+60%2A5280%2A12%2A%281%2F60%29+=+63360+ in/min
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Find cicumference, +C+, in inches
+C+=+2%2Api%2A%2828%2F2%29+
+C+=+28pi+
+C+=+87.9646+ in/rev
------------------------
[ in/rev ] / [ in/min ] = [ min/rev ]
+87.9646+%2F+63360+=+.001388+ min/rev
+1%2F.001388+=+720.29+ rev/min
-----------------------------------------
[ rad / rev ] * [ rev/min ] = rad/min
+%28%28+2pi+%29%2F1+%29+%2A+720.29+=+4525.715+ rad/min
check the math