# A sled of mass 14kg is on a hill inclined at 25 degrees to the horizontal. Friction is negligible. The sled is held at rest by a pole?

a pole higher up the incline, parallel to the hill.

a) Calculate the magnitude of the tension in the rope.

b) Calculate the magnitude of the normal force on the sled.

### 2 Answers

Relevance

- oubaasLv 74 weeks agoFavorite Answer
tension T = m*g*sin 25° = 14*9.806*0.423 = 58 N

normal force N = m*g*cos 25° = 14*9.806*0.906 = 124 N (120 with just 2 sign. digits)

- NCSLv 74 weeks ago
b) normal force for an object on an incline is

Fn = m*g*cosΘ

For your values, Fn = 124 N

a) For equilibrium, tension = downslope component of weight

T = m*g*sinΘ

For your values, T = 58 N

Still have questions? Get your answers by asking now.