MEDAL GIVEN TO CORRECT ANSWER.
Duane skis down a hill at an angle of 42°. He has a mass of 92 kg. What is the normal force on Duane?

A. 670 N
B. 493 N
C. 603 N
D. 552 N

Question

MEDAL GIVEN TO CORRECT ANSWER. 
Duane skis down a hill at an angle of 42°. He has a mass of 92 kg. What is the normal force on Duane?

 		A.	670 N
 		B.	493 N
 		C.	603 N
 		D.	552 N

joannablackwelder · Answer

Since the skier is going down a sloped hill, the whole weight will not need to be supported by the hill.

joannablackwelder · Answer

This one is tricky to explain because I can't draw a picture.

anonymous · Answer

You can if you it the draw button under the response box.

joannablackwelder · Answer

I'm on an iPad and don't think that button is available on my os.

joannablackwelder · Answer

The angle of the slope of the hill would be the same angle between the line perpendicular to the hill and the force of gravity vector (42 deg).

joannablackwelder · Answer

So, cos(42 deg) = n/902

joannablackwelder · Answer

Make sense?

anonymous · Answer

where did you get 902? 
I'm still not understanding what the answer should be.  @JoannaBlackwelder

joannablackwelder · Answer

902 is mg

joannablackwelder · Answer

n would be the component of the weight that is perpendicular to the hill.

joannablackwelder · Answer

The normal force is the force the hill is pushing back on the skier. Its magnitude would be the same, but the opposite direction.

anonymous · Answer

is it C?

joannablackwelder · Answer

I get closer to A