Question: Good day everyone, please help me with my confusion.

**"This worked" vs "This would work"**

First, **"This worked"** is in the past tense, and **"This would work"** is in

the past tense too since **"Would"** is the past tense of **"Will"**.

In short, they are both in the past tense, but my question is what are their differences? And 

what makes them different from each other?

Thanks in advance!

Answer: 
The word "would" in that case was not used as the past tense of "will." According to Merriam-Webster, the word "would" can also be used to "talk about a possible situation that has not happened or that you are imagining." (Source: <http://www.merriam-webster.com/dictionary/would>)
As @acheigrec says, 

`This worked` - Gives the idea of something that You fixed in the specific point in the past. 

`This would work` - You're creating an expectancy which something works, I think that It fits better with a conditional clause, for example

`If I were you, probably I would kill me!`

[Would](http://www.englishpage.com/verbpage/would.html) -
[Simple Past](http://www.englishpage.com/verbpage/simplepast.html)