Friction on an Incline

1. Write the formula for calculating the force of kinetic friction on an inclined plane, given the coefficient of kinetic friction (μ), mass (m), gravity (g), and the angle of the incline (θ).

2. A 2 kg box sits on a ramp inclined at 30°. The coefficient of kinetic friction between the box and the ramp is 0.3. Calculate the force of kinetic friction acting on the box.

3. A block is sliding down an inclined plane at a constant speed. What does this tell you about the relationship between the force of kinetic friction and the component of gravity acting parallel to the plane?