- #1

Cocoleia

- 295

- 4

## Homework Statement

I have a block on an inclined plane (the angle is 40). The block is projected with an initial speed of 2m/s and μ=0.05. I need to find the time it takes the block to go up the inclined plane and return to the point it started out.

## Homework Equations

## The Attempt at a Solution

I know that the force of friction will be μmgcosθ. Usually, the force bringing the block down the plane is mgsinθ.

I figure that I will need to find the acceleration and then use the equations of motion to find t, since the final speed at the top of the plane will be 0. I am having trouble setting up my equations.

Would it be that:

ma = -mgsinθ+ μmgcosθ