Question

Consider this situation: A large crate is at rest on a ramp at a loading dock. Of the forces listed, identify which act upon the crate.

Tap to select the forces that are present.
a) Normal
b) Gravity
c) Applied
d) Friction
e) Tension
f) Air resistance

Answer 1

The forces acting upon a crate at rest on a ramp include the normal force, gravity, and friction. Tension and applied force would not be present unless the crate is being pulled by a rope or pushed, and air resistance is not significant when the crate is at rest.

Step-by-step explanation:

When considering the forces acting upon a crate at rest on a ramp at a loading dock, several forces can be present. The normal force acts perpendicular to the surface of the ramp, supporting the crate and preventing it from moving through the ramp. The force of gravity, also known as the weight of the crate, pulls it downward toward the center of the Earth. If the crate is not moving, then we can assume there is no applied force. The force of friction acts parallel to the surface of the ramp and opposes the motion that would be caused by gravity, keeping the crate stationary. Tension would only be present if there were a rope or cable attached to the crate that is being pulled on. Air resistance is typically negligible in this context unless the crate is falling or moving at significant speeds.