Prove: Flange of Train Wheel Travels Backwards, - Physics Forums: Physics, Astronomy, Math, & Philosophy Forums!

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#1
10-20-2008, 01:35 AM
 porschedude Junior Member Join Date: Oct 2008 Posts: 1
Prove: Flange of Train Wheel Travels Backwards,

Prove that the flange of a train wheel travels backwards in respect to the ground using trigonometric functions, angular and linear velocity
#2
10-20-2008, 12:31 PM
 HallsofIvy Senior Member Join Date: Oct 2006 Posts: 464

Quote:
 Originally Posted by porschedude Prove that the flange of a train wheel travels backwards in respect to the ground using trigonometric functions, angular and linear velocity
Kind of trivial isn't it? Draw a line from the center of the wheel to the edge of the flange. As the point on the wheel, along that line, that makes contact with the rail comes down, touches the rail and then goes back up, what happens to the point on the flange? You should be able to calculate the precise motion from that.
#3
06-14-2009, 01:15 PM
 stuv652 Junior Member Join Date: May 2009 Posts: 2
Anyone have any ideas

Anyone have any ideas?

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