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22 September, 18:01

A truck with 32-inch diameter wheels is traveling at 60 mi/h. Find the angular speed of the wheels in rad/min. How many revolutions per minute do the wheels make?

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  1. 22 September, 18:19
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    3960 rad/min

    630.25 rpm

    Convert 60 mph to ft/min

    60*5280/60 = 5280

    Get the circumference of the wheels.

    32/12*pi = 32/12*3.14159 = 8.37758

    Divide distance by circumference to get RPM

    5280/8.37758 = 630.25 rpm

    Multiply by 2*pi to get rad/min

    630.25 * 2 * pi = 3960
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