Use the same method as angel.white has described here http://www.mathhelpforum.com/math-he...306-post2.html
The product of revolutions times circumferences must be constant:
. Plug in the values you know:
. Solve for .
(For confirmation only: )
Electric Motor. if a 2 inch diameter pulley that's being driven by an electric motor and running at 1600 revolutions per minute is connected by a belt to a 5 inch diameter pulley to drive a saw, what is the speed of the saw in revolutions per minute?
Use the same method as angel.white has described here http://www.mathhelpforum.com/math-he...306-post2.html
The product of revolutions times circumferences must be constant:
. Plug in the values you know:
. Solve for .
(For confirmation only: )