The Student Room Group

Help in physics mechanics

The pull exerted by an engine is 1/80 of the weight of the whole train and the maximum brake force which can be exerted is 1/30 of the weight of the train. Find the time in which the train travels from rest up a slope of 1 in 240 and 4800m along, if the brakes are applied when the engine is switched off.
What have you tried so far?

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