Spring: relation between displacement,velocity,acceleration,force and energy

[Fu-Kwun Hwang]

The following simulation show relations between displacement($x$), velocity($v_x$), acceleration ($a_x=-k*x/m$),force($F_x=-k*x$), kinetic energy($K=\tfrac{1}{2}m*v_x^2$) and potential energy($U(x)=\tfrac{1}{2}k*x^2$)

Drag the blue object at one end of the spring and let go.

Drag force is added. 2011/03/18 $F=-k*x-b*v_x$

Embed a running copy of this simulation
<applet code='users.ntnu.fkh.dynamic_springxvaH_pkg.dynamic_springxvaHApplet.class' archive='http://www.phy.ntnu.edu.tw/ntnujava/ejsuser/2/ejs_dynamic_springxvaH.jar' name='dynamic_springxvaH7972' id='dynamic_springxvaH7972' width='652' height='519' mayscript=true><param name='draggable' value='true'></applet>
Embed a running copy link(show simulation in a popuped window)
<a href='http://www.phy.ntnu.edu.tw/ntnujava/msg.php?smfejs=7972' target='smfejs'>Run simulation</a>

Full screen applet or 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!

[lookang]

nice applet above.
Like the speed controller on the right slider allow for speedy exploration by students
Like the Drag the blue object at one end of the spring and let go, clear instruction on what the applet can do.


just to share i also have one similar
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=758.msg2870#msg2870

animated gif found here http://weelookang.blogspot.com/2010/06/ejs-open-source-simple-harmonic-motion.html

Ejs open source simple harmonic motion java applet SHM virtual lab
customized to my style and teaching needs


btw some guy (founder of PhyzixLabs Software (www.phyzixlabs.com)) introduce this to me
http://colabopad.blogspot.com/2011/03/public-release-of-simupad.html
Demos: http://colabopad.blogspot.com/2011/03/public-release-of-simupad.html
Product Tour for Users: http://www.youtube.com/watch?v=PhZcIMvejVA
Product Tour for developers: http://www.youtube.com/watch?v=wma9MU2e_U0
It is free for programmers like yourself, so feel free to experiment.

[ahmedelshfie]

I like, different design with a good idea about SHM, nice work prof.