The normal force that acts on a block of ice that slides on a ramp
A)is equal to mg at all angles.
B)decreases as the slope of the ramp increases.
C)becomes greatest when the ramp is vertical.

Question

Quizplus · Accepted Answer

The normal force is perpendicular to the surface of the ramp and counteracts the force of gravity. As the slope of the ramp increases, the component of the force of gravity parallel to the surface of the ramp increases, causing the normal force to decrease. When the ramp is vertical, the normal force becomes zero, as there is no surface for the block to rest on. Therefore, option A and C are incorrect.

The Normal Force That Acts on a Block of Ice