A vehicle moves up a rough incline of angle θ with constant speed v. Its mass is m and coefficient of kinetic friction is μ. Which statements are correct?
Select all that apply

Question

A vehicle moves up a rough incline of angle θ with constant speed v. Its mass is m and coefficient of kinetic friction is μ. Which statements are correct?

G1 Physics · Accepted Answer

For constant speed, engine force balances mg sinθ + μmg cosθ. Hence engine power is that force times v. Net power equals dK/dt=0. Gravity acts opposite upward velocity, so its power is −mgv sinθ.