NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/

Easy Java Simulations (2001- ) => Dynamics => Topic started by: Fu-Kwun Hwang on April 28, 2009, 12:26:19 am



Title: Action Force and Reaction Force
Post by: Fu-Kwun Hwang on April 28, 2009, 12:26:19 am
This applets is designed to test your understanding about action force and reaction force.
You can  drag two hand with mouse.
The force exists when both hands touch two sides of the spring and the length is different from the original length.
There are two pairs of action force and reaction force ( all shown as arrow with different color).
Please identify those two pairs of action and reaction force.



Title: Re: Action Force and Reaction Force
Post by: jeff_forssell on May 07, 2009, 04:16:33 pm
Newtons 3rd law is very nonexistent in the simulation universe. So I was interested to see this one.

When I noticed that a UK physics assessment test had lots of questions about reactive forces I tried to make a simulation in a nice simulator called Particle World. Unfortunately it is not a free program but I got permission to have a copy:

http://tupo.biz/kurser/javaapplets/Fysik/java/PW/appletstarter.html

In the starting simulation you can see many bodies with different masses and speeds in 1-dim collisions. All had identical springs to show the forces involved. You can change to the same but with English labels with File>predefined>Newtons3je>8 cases speeds masses

I have a bunch of exercises to follow through but they are only in Swedish.

It is possible to Export / import simulations into this applet. And it is fun to play with. You can grab things with your mouse too and throw them around.

It ought to be easy to make something similar with Physlets or EJS.