(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A horizontal force of 12 N pushes a 0.5-kg block against a vertical wall. The block is initially at rest. If u_{s}= 0.6 and u_{k}= 0.8, which of the following is true?

(a) The frictional force is 4.9N

(b) The frictional force is 7.2N

(c) The normal force is 4.9

(d) The block will start moving and accelerate

(e) If started moving downward, the block will decelerate

2. Relevant equations

f_{k}= U_{k}N

N = mg

3. The attempt at a solution

N = 0.5kg * 9.8m/s2 = 4.9

I marked down the answer as C, but I was wrong...

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# Homework Help: Block pushed up against a wall

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