NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/
April 21, 2021, 09:55:44 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  
Teaching without words. ...Lao Tzu (570-490 BC)
Google Bookmarks Yahoo My Web MSN Live Netscape Del.icio.us FURL Stumble Upon Delirious Ask FaceBook

Pages: [1]   Go Down
Author Topic: Free Fall modelling with Friction force F = k*v and a plot of Energy vs time  (Read 6258 times)
0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
Hero Member
Offline Offline

Posts: 1796


Embed this message
on: November 26, 2008, 02:07:29 pm »

Add a plot of total energy E(t) to the simple free fall model. Why is the energy plot similar to a plot of radioactive decay? Plots are described in the Ejs manual but note that the Pendulum model in this package includes a plot and can be used as a template for this activity.

My contributions are
1. variable KE
2. variable PE
3. variable TE

4. add fix relations

KE = 0.5*mass*vy*vy;
PE = mass*g*y;
TE = KE +PE;

5. add plottingPanel

6. add trace, input X = t, input Y = KE , line color = MAGENTA
7. add trace, input X = t, input Y = PE , line color = BLUE
8. add trace, input X = t, input Y = TE , line color = BLACK

9. Change position of DrawingPanel to right
10. Change position of plottingPanel to centre // better view of the graphs called plottingPanel

source code
download the *.jar for using the applet on standalone without internet connection.

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!

* freefallfrictionplot.PNG (26.86 KB, 752x470 - viewed 459 times.)
« Last Edit: August 03, 2009, 11:44:14 am by lookang » Logged
Pages: [1]   Go Up
Teaching without words. ...Lao Tzu (570-490 BC)
Jump to:  

Related Topics
Subject Started by Replies Views Last post
Free Fall modelling to understand the Event for ODE Evolution Page
Collaborative Community of EJS
lookang 2 9482 Last post August 03, 2009, 11:24:15 am
by lookang
Free Fall modelling with Friction force F = k*v
Collaborative Community of EJS
lookang 0 10069 Last post November 26, 2008, 01:13:20 pm
by lookang
Free Fall Cartesian with friction 2D Wolfgang Christian and Francisco Esquembre
Collaborative Community of EJS
lookang 1 6568 Last post January 05, 2019, 02:22:18 pm
by vivozi
Ski as example to illustrate the friction force (normal force...etc)
Request for physics Simulations
Fu-Kwun Hwang 14 30466 Last post January 29, 2021, 02:21:57 am
by AndrewRoss
Relation between friction force, external force, normal force
Fu-Kwun Hwang 1 16016 Last post July 23, 2009, 04:01:38 pm
by lookang
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 0.047 seconds with 23 queries.since 2011/06/15