Timeline for Units don't match in the torsional spring energy!
Current License: CC BY-SA 3.0
17 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 22, 2016 at 18:00 | comment | added | Gonenc | Related: physics.stackexchange.com/q/193684/68030 | |
| Mar 22, 2016 at 0:22 | history | tweeted | twitter.com/StackPhysics/status/712072002073403392 | ||
| Mar 21, 2016 at 22:33 | comment | added | Criticizing Israel not allowed | @Joel Well, if radians were considered a dimension, that formula would have a lot of negative powers of radians in it. It would be the same computation, but written in a way that would make the units work. | |
| Mar 21, 2016 at 21:59 | history | edited | rob♦ | CC BY-SA 3.0 |
clean up TeX
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| Mar 21, 2016 at 21:59 | history | protected | Qmechanic♦ | ||
| Mar 21, 2016 at 21:47 | answer | added | rob♦ | timeline score: 4 | |
| Mar 21, 2016 at 21:45 | answer | added | David Richerby | timeline score: 5 | |
| Mar 21, 2016 at 21:38 | comment | added | Joel | What I'm saying is basically an extension of the accepted answer - radians aren't a dimension. I'm just highlighting one of the things that would really go wrong if people tried to treat them as if they were. | |
| Mar 21, 2016 at 21:28 | comment | added | skrat | @Joel yes, that makes sense, but the question is as follows (is written somewhere here in the comments but wasn't answered). If my $k$ is defined as $k=EI/L$ where $E$ is Young's elasticity module and $I$is moment of inertia and $L$ is unit length in meters, than $k$ is in units of Nm. Now the question is: does one have to divide the previously defined $k$ by $2\pi$ in order to get the correct units (Nm/rad) or not? I do understand the meaning of radians, at least I think I do, but sometimes the numbers matter too! Or do i simply imagine that the radians are already there since rad =1. | |
| Mar 21, 2016 at 21:23 | comment | added | Joel | Interesting fact - you'd never be able to take sin or cos of a number in radians if radians were an actual "dimension" - consider adding up the Taylor Series terms. Lots of different powers of that dimension. | |
| Mar 21, 2016 at 20:30 | answer | added | Massimo Ortolano | timeline score: 4 | |
| Mar 21, 2016 at 13:57 | vote | accept | skrat | ||
| Mar 21, 2016 at 12:11 | vote | accept | skrat | ||
| Mar 21, 2016 at 13:57 | |||||
| Mar 21, 2016 at 12:02 | comment | added | Qmechanic♦ | Related: physics.stackexchange.com/q/37881/2451 , physics.stackexchange.com/q/36079/2451 and links therein. | |
| Mar 21, 2016 at 11:50 | answer | added | lemon | timeline score: 10 | |
| Mar 21, 2016 at 11:19 | answer | added | jm22b | timeline score: 29 | |
| Mar 21, 2016 at 11:15 | history | asked | skrat | CC BY-SA 3.0 |