Question Detail

PHY 101 Friction Objective Question

Question

A 200 N block rests on a frictionless inclined plane with a slope angle of 30°. What is the component of its weight acting parallel to the incline?
Options
A 200 cos 30° N
B 200 N
C 200 sin 30° N
Correct Answer
D 0 N
Correct Answer

Option C is the correct answer.

Detailed Explanation

For an inclined plane at an angle θ, the component of weight parallel to the plane is mg sin θ. Here, weight is 200 N, so the parallel component is 200 sin 30° N.

Hint

The weight is vertical. It needs to be resolved into components parallel and perpendicular to the inclined surface.

Question Info