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**desperate_on_sunday_night** "suppose that a belt drives two wheels of radii R (bigger wheel) and r"

there is a figure and it's like a big wheel and a small wheel with a belt around them.....so they have the same linear speed i think...

R=8 ft

r=3 ft

a) the angular speed of the larger wheel in radians/minute - i know this is 400pi radians/min

b) the linear speed of a point on the circumference of the larger wheel (also a point on the belt) - 3200pi ft/min

i know those answers are right because we did the problems in class and i understand how to get them.... i just dont understand this last part:

c) the angular speed of the smaller wheel in revolutions/minute........ok i dont understand this at all.

i think the answer was 533 revolutions/minute but i'm not sure if i copied that down correctly (we did it in class )

i thought i'm supposed to use the formula v=rw since i already have v=400pi radians/minute and r=3 ft

so i got 1200pi radians but i think the teacher divided this by 3 (i have no idea why) and got that answer 533 revolutions/minute

thankss