FIGURE 6-1
-In Figure 6-1, the block of mass m is at rest on an inclined plane that makes an angle θ with the horizontal. The normal force F acting on the block must be such that
A) F mg.
B) F mg cosθ.
C) F mg sinθ.
D) F = mg cosθ.
E) F = mg sinθ.

Question

FIGURE 6-1 
-In Figure 6-1, the block of mass m is at rest on an inclined plane that makes an angle θ with the horizontal. The normal force F acting on the block must be such that
A) F > mg. 
B) F > mg cosθ. 
C) F > mg sinθ. 
D) F = mg cosθ. 
E) F = mg sinθ.

Quizplus · Accepted Answer

The normal force F is the component of the gravitational force perpendicular to the inclined plane, which is mg cosθ.

FIGURE 6-1 -In Figure 6-1, the Block of Mass M Is at M