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Monday, August 9, 2010

Ejs Open Source Gravitational Field & Potential of 2 Mass Java Applet « on: August 02, 2010, 01:29:48 PM » posted from:Singapore,,Singapore

Ejs Open Source Gravitational Field & Potential of 2 Mass Java Applet
« on: August 02, 2010, 01:29:48 PM » posted from:Singapore,,Singapore

intro Youtube up! 23 may 2013
updated 14May 2013
added g proportional to r inside sphere of constant density as suggested by tatleong. re-implemented dotted lines of g1 g2 and phi1 and phi2 with no lag after using the group to contain them.
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_GFieldMass.jar
author: lookang and andrew based on andrew duffy early model
worksheets by (lead) YJC: same link of four simulations https://www.dropbox.com/s/53vztw6meupn4r5/GravitationYJC.zip


updated: 08 March 2013
version 08 March 2013 added g1 g2 and phi1 and phi2 drawings as suggested by lawrence during 5th IPSG.
http://weelookang.blogspot.sg/2010/08/ejs-open-source-gravitational-field.html
https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_GField_and_Potential_1D_v7wee.jar






updated with dφ/dr = 3.77E-8 N/kg and a help ?

picture of computer model with g and φ to scale of the right and check-box for visualization of that dφ/dr to be used in deduction of dφ/dr = -g by comparison made by students


picture of computer model with g and V to scale of the right and check-box for visualization of that dV/dr to be used in deduction of dV/dr = -g by comparison made by students.


picture of computer model with g and V to scale of the right and data analysis tool for investigation that dV/dx = -g 


Ejs Open Source Gravitational Field & Potential of 2 Mass Java Applet with improved field of precise keying in of values of Masses M1 and M2
Ejs Open Source Gravitational Field & Potential of 2 Mass Java Applet
Ejs Open Source Gravitational Field & Potential of 2 Mass Java Applet
many thanks to
Professor Andrew Duffy for his original codes, to
Professor Fu-Kwun Hwang for his forum and community of learners & to
Professor Paco for creating Ejs toolkit.




Full Screen
Full Screen older version
Java Simulation above is kindly hosted by NTNUJAVA Virtual Physics Laboratory by Professor Fu-Kwun Hwang
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1921.0
alternatively, go direct to http://www.phy.ntnu.edu.tw/ntnujava/index.php?board=28.0
Collaborative Community of EJS (Moderator: lookang) and register , login and download all of them for free :) This work is licensed under a Creative Commons Attribution 3.0 Singapore License
Author: lookang and Andrew Duffy



28 July 2011 thanks to Jimmy Goh HOD Science (Yishun Junior College) for advancing one to one learning using simulations

 preparation for 1to1 learning with simulations

  jimmy explaining to class about the 1to1 learning with simulations

   jimmy explaining to class about the 1to1 learning with simulations


   jimmy demonstrate to class about the learning task of the 1to1 learning with simulations


   students in Yishun JC trying the simulations as inquiry lab with the tutorial questions


  students in Yishun JC trying the simulations as inquiry lab with the tutorial question, the simulation allow students to make sense of the meaning of gravitational field and potential

  students in Yishun JC trying the simulations as inquiry lab with the tutorial questions



Ejs Open Source Gravitational Field & Potential of 2 Mass Java Applet lesson at YJC

Ejs Open Source Gravitational Field & Potential of 2 Mass Java Applet student using the simulation for SDL
Letter of Appreciation from MOEHQ ETD


Vnet = - G M_1/r_1+- G M_2/r_2


Vnet = - G M_1/r_1+- G M_2/r_2


gnet = - G M_1/r_1^2


Vnet = - G M_1/r_1

contribution to wikipedia and Wikimedia

Thumbnail descDate Name User Size Description
16:20, 30 July 2011Gravitational potential summation.png (file)Lookang8 KB
16:19, 30 July 2011Gravitational potential summation 2.png (file)Lookang8 KB
14:32, 30 July 2011Gravitational potential.gif (file)Lookang489 KB
14:32, 30 July 2011Gravitational field.gif (file)Lookang492 KB
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