What Are The Magnitudes of Forces in a Tractor Pulling Contest?

[jsirving]

Homework Statement

In a tractor pulling contest, a 2300-kg tractor pulls a 4900-kg sledge with an acceleration of 0.61 m/s^2. If the tractor exerts a horizontal force of 7700 N on the ground, determine the magnitudes of (a) the force of the tractor on the sledge; (b) the force of the sledge on the tractor; and (c) the frictional force extended on the sledge by the ground.

Homework Equations

Fnet = ma

The Attempt at a Solution

 

[lavalamp]

What do you have so far, which part can't you do? You don't seem to have made an attempt yet.