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$\begingroup$ I'd add a little hint about describing circular motion as SHM - if you try writing circular motion as the (vector) sum of motion along two orthogonal axes... well, you'll see. $\endgroup$

Kyle Oman
– Kyle Oman

2013-06-27 12:45:17 +00:00
Commented Jun 27, 2013 at 12:45
$\begingroup$ @Kyle , I don't think that is required for explaining why the negative sign occurs... $\endgroup$

udiboy1209
– udiboy1209

2013-06-27 15:42:28 +00:00
Commented Jun 27, 2013 at 15:42
$\begingroup$ the asker said they were fairly lost... wasn't sure, but thought it might be more than just the -ve sign that was confusing them. $\endgroup$

Kyle Oman
– Kyle Oman

2013-06-27 15:48:31 +00:00
Commented Jun 27, 2013 at 15:48

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create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
quote by placing > at start of line
to make links (use https whenever possible)

<https://example.com>

[example](https://example.com)

<a href="https://example.com">example</a>
MathJax equations $\sin^2 \theta$

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