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 February 1st, 2018, 11:25 AM #1 Newbie   Joined: Feb 2018 From: south africa Posts: 4 Thanks: 0 need help good day I need help a belt is driven by a pulley at 33m/s the pulley rotates at 750 r/min. calculate: (a) the rotational frequency in r/s (b) the diameter of the drive pulley
 February 1st, 2018, 11:37 AM #2 Global Moderator     Joined: Oct 2008 From: London, Ontario, Canada - The Forest City Posts: 7,900 Thanks: 1094 Math Focus: Elementary mathematics and beyond (a) What do you need to do to 750 r/min to find the number of rotations per second (r/s)? (b) Can you use that result along with the speed of the belt to answer this part?
 February 1st, 2018, 11:46 AM #3 Newbie   Joined: Feb 2018 From: south africa Posts: 4 Thanks: 0
 February 1st, 2018, 12:41 PM #4 Global Moderator   Joined: Dec 2006 Posts: 20,104 Thanks: 1907 If the pulley has diameter d and makes n revolutions per second, n × $\pi$d = 33 m.

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