Question Detail
Question
A 120 N concrete block rests on a 30° inclined plane. Which force is most likely to cause the block to slide down the plane?
Correct Answer
Option C is the correct answer.
Detailed Explanation
On an incline, the component of the block's weight acting parallel to the plane (mg sin θ) is the force that pulls the block down the slope.
Hint
Gravity acts vertically, but on a slope, part of its effect is to pull the object along the surface.