A 12.0-kg microwave oven is pushed 8.00 m up the sloping surface of a loading ramp inclined at an angle of 36.7 ∘ above the horizontal, by a constant force F⃗ with a magnitude 113 N and acting parallel to the ramp. The coefficient of kinetic friction between the oven and the ramp is 0.259.
What is the work done on the oven by the friction force?
