The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley. a) 133 1/3b) 800c) 1,200

C) 1200 rpm

Explanation:

= Diameter of bigger pulley = 24 inch

= Diameter of smaller pulley = 8 inch

= Speed of bigger pulley = 400 rpm

= Speed of smaller pulley

The relation between revolutions per minute and diameter is that they are inversely proportional.

The number of revolutions per minute of the smaller pulley is 1200 rpm

a.   mass number from atomic number

option number c is the right answer.