July 17th, 2007, 03:38 AM  #1 
Senior Member Joined: Dec 2006 From: New Jersey Posts: 378 Thanks: 1  Wheel Rotation
Four cable lines are used to pull cable cars up and down the hills of Smallville. Each cable travels at a speed of 9.55 mph, caused by a rotating wheel with a diameter of 8.5 feet. How fast is the wheel rotating?

July 30th, 2007, 06:32 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,270 Thanks: 1958 
The wheel's radius is 4.25 feet, so dividing 9.55 mph by 4.25 feet will give you the wheel's rotational speed (in radians per hour). To evaluate that, you will need to know how many feet there are in a mile (a mile is usually taken to be 5280 feet). Divide by 2pi if you want the speed in revolutions per hour rather than radians per hour.


Tags 
rotation, wheel 
Search tags for this page 
Click on a term to search for related topics.

Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Ferris wheel question  mathhelper_123  Algebra  7  December 13th, 2012 11:01 AM 
A wheel is making 240 rpm and after 30 sec and after 30 sec  rsoy  Physics  0  May 23rd, 2012 01:43 PM 
From relative rotation to absolute rotation in 3D space  Maegfaer  Algebra  1  August 27th, 2010 10:01 PM 
double ferris wheel  bigdogsmhs306  Algebra  1  November 25th, 2009 08:31 AM 
Ferris Wheel Problem  golfmaster925  Algebra  2  February 23rd, 2008 02:46 PM 