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"If I have a thousand ideas and only one turns out to be good, I am satisfied." ..."Alfred Nobel(1833-1896, Swedish inventor, chemist, philanthropist)"

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 Author Topic: Remixed Inclide Plane for use in Elementary School  (Read 8162 times) 0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
engrg1
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 « Embed this message 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 490 times.) « Last Edit: March 12, 2012, 03:31:45 pm by lookang » Logged
engrg1
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 « Embed this message 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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 « Embed this message 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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 « Embed this message 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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 « Embed this message 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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 « Embed this message Reply #5 on: February 20, 2012, 12:58:43 pm » posted from:-,-,SINGAPORE

My 3rd Version

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!
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engrg1
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 « Embed this message 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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 « Embed this message 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 522 times.) Logged
Fu-Kwun Hwang
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 « Embed this message 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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engrg1
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 « Embed this message 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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http://weelookang.blogspot.com

 « Embed this message Reply #10 on: March 12, 2012, 03:32:31 pm » posted from:SINGAPORE,SINGAPORE,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

Hi engrg1!!

i have added in first post for the picture to appear
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"If I have a thousand ideas and only one turns out to be good, I am satisfied." ..."Alfred Nobel(1833-1896, Swedish inventor, chemist, philanthropist)"
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