SOLUTION: If a belt goes around two pulleys, the number of revolutions per minute of each pulley is inversely proportional to its radius. What is the speed of revolutions of an 8-inch wheel

Algebra ->  Functions -> SOLUTION: If a belt goes around two pulleys, the number of revolutions per minute of each pulley is inversely proportional to its radius. What is the speed of revolutions of an 8-inch wheel       Log On


   

Question 656132: If a belt goes around two pulleys, the number of revolutions per minute of each pulley is inversely proportional to its radius. What is the speed of revolutions of an 8-inch wheel if a 5-inch wheel is spinning at 120 RPM
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Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
I can say
+120+=+k%2A%281%2F5%29+
+k+=+600+
and
+s+=+600%2A%281%2F8%29+
+s+=+75+
The speed of the 8" radius wheel is 75 RPM