Two pulleys of a car engine radius of 10 cm and 4 cm, respectively, are connected by a belt. The larger pulley rotates 80 times per minute. Find the angular velocity of each pulley in radians per minute.

Question

anonymous · Answer

Can you find the angular velocity of the larger pulley? If so you just need to find the revolutions of the smaller pulley.
Hint: for every revolution larger pulley rotates, how much distance of the  belt did it pulled? And how man rotation did the smaller pulley need to rotate to Mach that length?

anonymous · Answer

would you make a proportion?