1) A 2.0-kg box is sitting on a ramp inclined at an angle of 20 degrees. It is currently stationary. The coefficient of static friction between the ramp and the box is 0.58, and the coefficient of kinetic friction is 0.30. 

a) Draw a free-body diagram of the box complete with labels, axes, and angles. Indicate, which forces cancel out, if any.
 

b) What is the acceleration of the box?
 

c) What is the magnitude of the frictional force?

 

d) What is the largest angle that the ramp can be tilted before the box begins to move? Start from Newton's Second Law to show your answer.

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Answer rating: 100% (QA)

a Freebody diagram of the box mg In the freebody diagram the following forces are labeled mg The gravitational force acting vertically downward where ... View the full answer