Help with angular velocity question.?

Question

An elevator hangs from a cable that goes around a pulley of diameter 7.7 feet. If the elevator climbs 181 feet in 17.2 seconds at a constant speed, determine the angular velocity of the pulley in revolutions per second. Your answer must be accurate to three decimal places.

Answer 1

The linear speed of the cable is
181/17.2 ft/sec

one revolution is equal to the circumference of the pulley or 7.7 *pi ft/revolution

so the angular speed is
(181/17.2)/(7.7*pi) rev/sec
=.435 rev/sec

j

Answer 2

As I said.