Edit - Physics Stack Exchange

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Required fields*

Rev

$\begingroup$ Thanks for the anwer! By "orthoradial" you mean the $\hat{\theta}$ direction? If so, and if I got your point, even if $a_{\theta}=0$ by definition of central force ($F || \hat{r}$), $v_{\theta}$ changes in time because the direction of $\hat{\theta}$ is not fixed. Would you be so kind as to give some further explanation about the change in $\vec{v_{\theta}}$? I can understand that the direction of this vector changes, but I still don't see how a central (and so radial) force can change the magnitude of $\vec{v_{\theta}}$, since it is always perpendicular to it, by definition. $\endgroup$

Sørën
– Sørën

2016-04-13 12:48:13 +00:00
Commented Apr 13, 2016 at 12:48
1

$\begingroup$ Yes, orthoradial means $\hat θ$ [in French, at least :-)]. Figuratively I've done my best and can't say better than "the magenta arrow is longer than the red one". More formally, see the last paragraph I've just added. $\endgroup$

L. Levrel
– L. Levrel

2016-04-13 19:29:58 +00:00
Commented Apr 13, 2016 at 19:29

Add a comment |

Correct minor typos or mistakes
Clarify meaning without changing it
Add related resources or links
Always respect the author’s intent
Don’t use edits to reply to the author

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 $\sin^2 \theta$

formatting help »
answering help »

MathJax help »