Friction on Inclines

1. Explain in your own words how the angle of an inclined plane and the coefficient of friction affect whether an object will slide down the plane.

2. A block is placed on an inclined plane. Describe the forces acting on the block. Be sure to include the direction of each force.

3. A 10 kg box is placed on an inclined plane with an angle of 25°. The coefficient of static friction between the box and the plane is 0.4. Will the box slide down the plane? Explain your reasoning, including any relevant calculations.