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Re: How Railroad Could Have Avoided / Ameliorated Fiery Crash

Posted by merrick1 on Wed Feb 11 19:28:32 2015, in response to Re: How Railroad Could Have Avoided / Ameliorated Fiery Crash, posted by steamdriven on Tue Feb 10 22:26:42 2015.

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The coefficient of static friction is greater than the coefficient of kinetic friction.

If you put a block on a board and tilt the board just to the point where the block starts to slide the block will continue to slide if you lower the board a little bit.

A rolling wheel is static with respect to the rail. If the wheel starts to slide kinetic friction applies and the braking force decreases.

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