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Introductory Physics Homework Help
Coeffecient of train and the tracks?
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[QUOTE="Narwhalest, post: 4949157, member: 535608"] In this problem, it's more about the Work done to the train to get it to come to a halt. First they give you the train's [B]mass and velocity[/B]. (Remember: Kinetic Energy [PLAIN]http://www.sciweavers.org/upload/Tex2Img_1418868535/render.png[/PLAIN] ) If we look at the the energy of the system, it goes to zero. As you've said before, there is a frictional force which acts on the system. This (frictional) Work must then equal the Kinetic Energy lost when braking the train. Also, Work is equal to the force applied over a distance [PLAIN]http://www.sciweavers.org/upload/Tex2Img_1418868266/render.png[/PLAIN] . I hope this helps point you in the right direction :) [/QUOTE]
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Coeffecient of train and the tracks?
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