## anonymous 4 years ago A motor is pulling a box at a certain rate. You have velocity, a frictional coefficient, and the mass of the box. Find the power needed to keep the box moving at the original velocity and then convert to horsepower..

This is the same as the previous question you posted. Force of friction is calculated from $F_f = m \cdot g \cdot \mu$ The motor applies a force equal to the force of friction because the box isn't accelerating. $P = F_f \cdot v$