NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/
October 21, 2017, 06:21:05 am *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
 
   Home   Help Search Login Register  
Life well spent is long. ..."da Vinci (1452-1519, Italian artist, sculptor, painter, architect, engineer and scientist) "
Google Bookmarks Yahoo My Web MSN Live Netscape Del.icio.us FURL Stumble Upon Delirious Ask FaceBook

Pages: [1]   Go Down
  Print  
Author Topic: Ejs Open source java applet Resolving a Vector in 2 perpendicular directions  (Read 8321 times)
0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
lookang
Moderator
Hero Member
*****
Offline Offline

Posts: 1784


http://weelookang.blogspot.com


WWW
«
Embed this message
on: March 01, 2009, 12:04:14 am »

Resolving a Vector in 2 perpendicular directions by lookang
original source code by hwang fu-kwun, remixed for helping visualization of components

reference:
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=634.msg2195#msg2195
http://www.walter-fendt.de/ph14e/forceresol.htm

Embed a running copy of this simulation

Embed a running copy link(show simulation in a popuped window)
Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
  • Please feel free to post your ideas about how to use the simulation for better teaching and learning.
  • Post questions to be asked to help students to think, to explore.
  • Upload worksheets as attached files to share with more users.
Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!


* resolvevectorlookang.PNG (53.95 KB, 1280x1024 - viewed 282 times.)
« Last Edit: December 22, 2010, 01:43:53 pm by lookang » Logged
lookang
Moderator
Hero Member
*****
Offline Offline

Posts: 1784


http://weelookang.blogspot.com


WWW
«
Embed this message
Reply #1 on: March 02, 2009, 06:00:50 am »

more

1. added centre of (x,y) to make drawable visible
2. used actual length instead of unit length  xp=x+Math.sqrt(dx2*dx2+dy2*dy2)*Math.cos(Math.atan2(dy2,dx2)-Math.atan2(dy1,dx1))*Math.cos(Math.atan2(dy1,dx1)); // xp = x + component cta1
yp=y+Math.sqrt(dx2*dx2+dy2*dy2)*Math.cos(Math.atan2(dy2,dx2)-Math.atan2(dy1,dx1))*Math.sin(Math.atan2(dy1,dx1)); //
3. added
Rcos = R*Math.cos((Math.atan2(dy2,dx2)-Math.atan2(dy1,dx1)));
Rsin = R*Math.cos((Math.atan2(dy2,dx2)-Math.atan2(dy1,dx1)));
4. change the logic of drawing the angle polyon to
dc = (Math.atan2(dy2,dx2)-Math.atan2(dy1,dx1))/(n-2);// modify to draw from black line sing dx and dy as inputs
px[0]=x; // for drawing angle polygon
py[0]=y; //
for(int i=1;i  c=Math.atan2(dy2,dx2)-(i-1)*dc;  // modify to work drawing from black line
//  if(c<-pi)c+=2*pi; // no necessary
  px=x+d*Math.cos(c); //
  py=y+d*Math.sin(c); //
}
5. added functions to make slider draggable to control the graphics, thanks Prof Hwang!


*** There are 7 more attached files. You need to login to acces it!
« Last Edit: December 22, 2010, 01:44:04 pm by lookang » Logged
Pages: [1]   Go Up
  Print  
Life well spent is long. ..."da Vinci (1452-1519, Italian artist, sculptor, painter, architect, engineer and scientist) "
 
Jump to:  


Related Topics
Subject Started by Replies Views Last post
Vector Addition « 1 2 »
Misc
Fu-Kwun Hwang 38 309624 Last post December 29, 2012, 01:13:07 pm
by koclup1580
Represent a vector as horizontal and vertical components applet
misc
lookang 14 17358 Last post May 05, 2008, 07:13:12 pm
by lookang
Circular motion: acceleration always perpendicular to velocity
Dynamics
Fu-Kwun Hwang 7 59862 Last post October 21, 2015, 01:32:10 pm
by freddygon
Circular motion: acceleration always perpendicular to velocity
dynamics
ahmedelshfie 0 4607 Last post June 08, 2010, 06:43:50 pm
by ahmedelshfie
vector sum/substract
misc
Fu-Kwun Hwang 0 2620 Last post September 28, 2014, 08:26:12 am
by Fu-Kwun Hwang
Powered by MySQL Powered by PHP Powered by SMF 1.1.13 | SMF © 2006-2011, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
Page created in 5.05 seconds with 23 queries.since 2011/06/15