How do you find the net force? urgent pls help!?

Question

how do you find the net force if you only know the

applied force

frictional force

normal force

gravitational force

and "mu"

Answer 1

That depends on which direction the applied force acts.  There is no such thing as "gravitational force", but there is weight which is the force that a mass exerts when accelerated by gravity, g.

W=mg

Fn=Normal force

Fm=Friction force

Ft=Total or "Net" force

F=Applied force

u="mu" coefficient of friction

If F is horizontal:

Fn=W

Fm=uFn=uW

Ft=F-Fm=F-uW

Note:  For static equilibrium there should be no net force.  If there is a net force on an object, it will accelerate.  Re:  Newton's Laws of Motion