A 200-N sled of slides down a frictionless hillside that rises at 37° above the horizontal.What is the magnitude of the force that the hill exerts on the sled parallel to the surface of the hill?
A)200 N
B)120 N
C)160 N
D)150 N
E)0 N

Question

Quizplus · Accepted Answer

Since the hillside is frictionless, there is no force exerted by the hill parallel to its surface. The only force exerted by the hill is the normal force, which acts perpendicular to the surface.

A 200-N Sled of Slides Down a Frictionless Hillside That