[quote author=Fu-Kwun Hwang link=topic=1841.msg6628#msg6628 date=1276918431]
You can check out  [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=727.0]Static friction/ sliding friction[/url] as an example.
[/quote]
hi prof, is there a version of getay without the array i.
i think i like this applet and i want to adapt the getay to make the same behavior for the car on slope that i am working on.
do u have a version of a similar applet without array i, i am having problem with the array
thanks!

Question:
how should i do it correctly?
for example in Evolution
is dv/dt = getax()
I then defined in custom
getax

public double getax () {

if(x+carSize/2>xbumperbottom) return 0; // if x beyond the bummer, make acceleration = 0 right?
else
return (TM*g/MI*Math.sin(angle)+thrust/MI);
}


but the car doesn't take the getax into the dv/dt.
how should the syntax be correctly used?
attached is my latest working file

[quote author=Fu-Kwun Hwang link=topic=1841.msg6628#msg6628 date=1276918431]
For the Fckeditor: You can find the original html message if you click the first image at the top line.
However, [b]spellcheck/preview[/b] will not be able to get updated content when fckeditor is activated. (Need to modify code to join this two tools.)
*** I just modified the code, the original button turn into "update", You need to click update before you click preview/spellcheck to get latest content from fckeditor.
The fckeditor mode is only available for user who has posted at least 10 message. I did not want it to be available for new user (to avoid message posted by program).
Fckeditor is available at http://sourceforge.net/projects/fckeditor/
Download it and following the instruction from INSTALL.html
P.S. I add javascript code in Theme/default/Post.template.php
[/quote]
thanks, until next time. SMF PHP is beyond me for now. ;D