SOLUTION: A truck with 42-in.-diameter wheels is traveling at 55 mi/h. Find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes: How many revol

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Question 1154319: A truck with 42-in.-diameter wheels is traveling at 55 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? (rpm)

Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
[ mi/hr ] x [ ft/mi ] x [ in/ft ] = [ in/hr]
[ in/hr ] x [ hr/min ] = [ in/min ]
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in/hr
in/min
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In 1 revolution the wheel lays down 1 circumference


in
--------------------------------
[ in/min ] / [ in/rev ] = [ rev/min ]
rev/min ( the rpms )
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[ rev/min ] x [ rad/rev ] = [ rad/min ]
rad/min ( the angular speed )
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check the math & get a
2nd opinion if needed

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