- #1
Tiba
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Homework Statement
A train is traveling on a horizontal and straight track, with a constant speed of 20m/s, when it begins to rain.
The rain is rigorously vertical and the mass of the water that falls over the train and after that runs vertically by it sides is 100kg per second.
Consider the resistance forces (air resistance and the friction in the non-movable wheels) to be constant.
For the speed of the train to keep constant after the rain start, the power developed by the train should suffer an increase of...?
Homework Equations
P=F.V
The Attempt at a Solution
I really have no clue... I could only think that the mass of the train will suffer an increase of 100kg, but I don't how to apply this mass increase to the formulas of power, P=T/t and P=FV