How Does Normal Force Relate to Friction and Acceleration?

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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
 

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The image you posted is not legible.
 
(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?
 

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