1. A pulley is turned 120 degrees per second.

a. find the number of revolutions per minute (rpm)

b. if the radius of the pulley is 5 inches, find the linear velocity in inches per second.

Guest Mar 23, 2018

#1**+1 **

120 degrees/sec x 1 rotation/360degrees x 60 sec/min = 20 rpm

CIRCUMFERENCE = pi x 2r = pi x 10 = 31.4 in

31.4 in/rotation x 20 rotat/min = 628 in/min

628 in/min x 1min/60 sec= 10.47 in/sec

ElectricPavlov
Mar 23, 2018

edited by
ElectricPavlov
Mar 23, 2018

edited by ElectricPavlov Mar 23, 2018

edited by ElectricPavlov Mar 23, 2018

edited by ElectricPavlov Mar 23, 2018

edited by ElectricPavlov Mar 23, 2018