Solving Inclined Plane Problem: Object Stopping Distance with Friction

[isohelp]

Homework Statement

An Object with a mass of 10.0kg is at rest at the top of a frictionless inclined plane of length 8.00m and an angle of inclination 30.0 with the horizontal. The object is released from this position and it stops at a distance d from the bottom of the inclined plane along a horizontal surface. The coefficient of kinetic friction for the horizontal surface is 0.400. At what horizontal distance from the bottom of the inclined plane will this object stop?

Homework Equations

The Attempt at a Solution

 

[isohelp]

I have a final tomorrow and I can't figure these out :(

 

[inky]

I have a final tomorrow and I can't figure these out :(

Draw the diagram for initial and final position for the object. Use law of conservation of energy at the top and distace d from the bottom.