Two identical boxes are on an inclined plane. Box 1 slides down, while box 2 remains at rest on the incline. What of these statements can we correctly conclude?
A)The frictional force is the same for boxes 1 and 2.
B)The frictional force on box 1 is larger than on box 2.
C)The frictional force on box 2 is larger than on box 1.
D)We need to know the weights of the two boxes to draw a conclusion about frictional forces.

Question

Quizplus · Accepted Answer

The frictional force on box 2 is larger than on box 1 because box 2 remains at rest, indicating it is experiencing static friction, which is generally larger than the kinetic friction acting on box 1 as it slides down.

Two Identical Boxes Are on an Inclined Plane