+0  
 
+1
47
1
avatar

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
Sort: 

1+0 Answers

 #1
avatar+12248 
+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

14 Online Users

avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details