A 90.0 N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 20° to the horizontal. What is the normal force exerted on the crate by the ramp?
A) 86.9 N
B) 84.6 N
C) 75.8 N
D) 30.8 N
E) 38.5 N

Question

Quizplus · Accepted Answer

The normal force is the component of the gravitational force perpendicular to the ramp. It can be calculated using the formula: Normal force = weight * cos(θ). Here, it is 90.0 N * cos(20°) ≈ 84.6 N.

A 900 N Crate of Apples Sits at Rest on a a Ramp