Question

If a ramp were coated with a smoother surface, the ramp’s efficiency would _____. increase because friction would decrease decrease because friction would increase increase because friction would increase decrease because friction would decrease

Answer 1

Increase because friction would decrease.

Coating the ramp with a smoother surface will decrease the friction. A decrease in friction will help to slide any object up the ramp easily. Thus, a lesser energy will be spent as compare to earlier. Hence, the ramp's efficiency will increase.