# Spring - Energy Conservation

1. Apr 23, 2017

1. The problem statement, all variables and given/known data

2. Relevant equations

Conservation Mechanical Energy

3. The attempt at a solution

I need to find how close to the wall the block will come. Since there's no friction, I presumed there'd be enough energy, and only enough energy, to go the same distance d to the left of A. Also note that d=-0.2m. This answer is incorrect however. I don't understand.

2. Apr 23, 2017

### PeroK

Why do you think that $d =0.2m$?

3. Apr 23, 2017

This is given.

4. Apr 23, 2017

### PeroK

What's this force of $18.8 N$ then?

5. Apr 23, 2017

Oh, I'm sorry I didn't realize something was missing. The force is taken away at point B.

6. Apr 23, 2017

### haruspex

Do not assume the block is at rest at that point.