How Does Normal Force Relate to Friction and Acceleration?

[carly_6216]

Homework Statement

#11

Homework Equations

a = Fnet / m

The Attempt at a Solution

Fw= 80 * 9.8
= 784

(.30)(80.0)(9.8)
= 235.2

 

[Herman Trivilino]

The image you posted is not legible.

 

[haruspex]

(The image is quite clear to me.)
Write out the force balance equation for the vertical direction. What is the normal force from the ground?