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March 28, 2015

Homework Help: Physics

Posted by StressedStudent on Saturday, September 22, 2012 at 8:08pm.

A train consists of 50 cars, each of which has a mass of 7.2 103 kg. The train has an acceleration of +7.2 10-2 m/s2. Ignore friction and determine the tension in the coupling (a) between the 30th and 31st cars and (b) between the 49th and 50th cars.

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