Based upon the calculation of the force, Fapplied, calculated in the previous step, how much power must be put into the system in order to maintain the constant speed of the rail?

Power that must be put into the system for an applied force, F, to keep the rail in motion at constant speed, v,

= (Fapplied) × (constant speed of the rail)

P = Fv

Explanation:

The question is incomplete; but the solution to this is straight forward.

The power required to be put into the system for an applied force, F, to keep a rail/body/object in motion at a constant speed of v, is given as

Power = (Fapplied) × (The constant speed)

P = Fv

Hope this Helps!!