A crate travels through a factory on a conveyor belt that is inclined at some non-zero angle above the horizontal at a constant speed.If air resistance is negligible,what forces are active on the box?
A) Normal force,weight,static friction,kinetic friction.
B) Normal force,weight,static friction
C) Normal force,weight,static friction,force of the conveyor belt
D) Normal force and weight

Question

Quizplus · Accepted Answer

The active forces on the box are the normal force perpendicular to the surface, the weight due to gravity, and static friction preventing the box from sliding down the incline. Since the box moves at constant speed, kinetic friction and any additional force from the conveyor belt are not needed.

A Crate Travels Through a Factory on a Conveyor Belt