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NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/ > Easy Java Simulations (2001- ) > Collaborative Community of EJS (Moderator: lookang) > Remixed Inclide Plane for use in Elementary School
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Author Topic: Remixed Inclide Plane for use in Elementary School  (Read 8309 times)
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engrg1
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on: February 08, 2012, 10:32:37 am » posted from:-,-,SINGAPORE
I have remixed this Incline Ramp written by Francisco Esquembre for use in Elementary School . Thanks to Francisco Esquembre for the code. The original code can be found @ http://www.opensourcephysics.org/items/detail.cfm?ID=9973

* ramp.jpg (46.12 KB, 819x474 - viewed 494 times.)
« Last Edit: March 12, 2012, 03:31:45 pm by lookang » Logged
engrg1
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Reply #1 on: February 08, 2012, 10:46:29 am » posted from:-,-,SINGAPORE
Changes Made:

1. Disable step button when the end of the ramp is reached.
2.Indicate the height of the ramp
3. Resolve bug if end of the ramp is reached.
4. Change the inclination angle to the height of the ramp
5. Specify the material (hard code the coefficient of friction)
6. Show velocity/
7. Remove the unncessary forces

Maybe can consider using that for accessement. Let the students design an experiment to find out which material has the most friction.
« Last Edit: February 08, 2012, 12:23:52 pm by engrg1 » Logged
engrg1
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Reply #2 on: February 10, 2012, 08:59:51 am » posted from:SINGAPORE,SINGAPORE,SINGAPORE
My version 2. Made some modifications.
*** There are 1 more attached files. You need to login to acces it!
« Last Edit: February 10, 2012, 09:01:35 am by engrg1 » Logged
engrg1
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Reply #3 on: February 16, 2012, 10:15:07 pm » posted from:Singapore,,Singapore
Made some modifications. Feel free to give comments.
Can anyone give me some possible values of static and kinetic coefficient of friction? I am trying to make this applet as realistic as possible.
Thank you!
« Last Edit: February 16, 2012, 10:28:08 pm by engrg1 » Logged
Fu-Kwun Hwang
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Reply #4 on: February 16, 2012, 11:46:16 pm » posted from:LONDON,ENGLAND,UNITED KINGDOM
If an object just about to slide down from an incline plane (increase the angle slowly),
 then the tan\theta value for that angle will be the static friction between that object and the incline plane.
So normally, the value is between 0-1.

Friction coefficient of tires on the road : initial value is 0.8

  Typical value of tires   static coefficient  kinetic coefficient
  auto tires on dry concrete  1.0  0.7-0.8
  auto tires on wet concrete  0.7     0.5
  auto tires on icyconcrete     0.3  0.02
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engrg1
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Reply #5 on: February 20, 2012, 12:58:43 pm » posted from:-,-,SINGAPORE
My 3rd Version

Embed a running copy of this simulation

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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!
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engrg1
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Reply #6 on: February 20, 2012, 01:09:48 pm » posted from:-,-,SINGAPORE
Thank, Prof Hwang !
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engrg1
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Reply #7 on: February 22, 2012, 04:11:12 pm » posted from:-,-,SINGAPORE
I have attached the picture so that it can appear on the "front page".

* ramp.jpg (46.12 KB, 819x474 - viewed 528 times.)
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Fu-Kwun Hwang
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Reply #8 on: February 22, 2012, 10:46:35 pm » posted from:LONDON,ENGLAND,UNITED KINGDOM
It only work if the attached file is bounded to the first posted message.
Try to create a new topic and attach the image at the same time, and try to use "upload EJS jar file" option to upload the jar file.
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Reply #9 on: February 23, 2012, 07:53:37 am » posted from:-,-,SINGAPORE
Thanks! Prof Hwang.
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lookang
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Reply #10 on: March 12, 2012, 03:32:31 pm » posted from:SINGAPORE,SINGAPORE,SINGAPORE
Quote from: engrg1 on February 08, 2012, 10:32:37 am
I have remixed this Incline Ramp written by Francisco Esquembre for use in Elementary School . Thanks to Francisco Esquembre for the code. The original code can be found @ http://www.opensourcephysics.org/items/detail.cfm?ID=9973



Hi engrg1!!

i have added in first post for the picture to appear Smiley
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