NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
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Give me a standpoint and I will move the earth. ...Archimedes (287-212BC)
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Author Topic: Pendulum wave  (Read 16584 times)
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Fu-Kwun Hwang
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on: March 14, 2009, 06:06:48 pm » posted from:Taipei,T'ai-pei,Taiwan

The following applet simulated a famous pendulum wave.
The length of each pendulum is different so that the frequency of each pendulum is different by a fixed amount.
The frequency of the first one f1 and the difference between near by pendulum can be adjusted by slider.
Because the frequency is too faster to be observed by our eye, so the simulation show slow motion of the real wave by a factor of 100. (You can change time scale,too. Drag the slider to the right to make it faster.)

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Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!


Check out youtube movie for pendulum wave

http://www.youtube.com/watch?v=7_AiV12XBbI

and

http://www.youtube.com/watch?v=OJCT9FbUf3g



* pendulumwave.jpg (23.22 KB, 572x451 - viewed 193 times.)

* pendulumwave.png (264.53 KB, 362x420 - viewed 249 times.)
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khalifah5
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Reply #1 on: March 29, 2009, 11:59:48 am » posted from:Petaling Jaya,Kuala Lumpur,Malaysia

i want to ask you about the pendulum. How would the period of a simple pendulum be affected if it was located on the moon instead of the earth?
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Fu-Kwun Hwang
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Reply #2 on: March 29, 2009, 01:56:34 pm » posted from:Taipei,T\'ai-pei,Taiwan

The period of the pendulum T=2\pi \sqrt{L/g} where L is the length of the pendulum and g is the gravity. (inversely proportional to square root of gravity)

You should be able to answer your question from the above information if you know how the gravity on the moon compared to gravity on the earth.
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JacobHenry
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Reply #3 on: October 01, 2013, 02:04:10 am » posted from:,,Satellite Provider

The following applet simulated a famous pendulum wave.
The length of each pendulum is different so that the frequency of each pendulum is different by a fixed amount.
The frequency of the first one f1 and the difference between near by pendulum can be adjusted by slider.
Because the frequency is too faster to be observed by our eye, so the simulation show slow motion of the real wave by a factor of 100. (You can change time scale,too. Drag the slider to the right to make it faster.)


Hello,

I want to view the first applet for my physics class, but it doesn't work. It says the plugin is not supported and it just shows me a gray screen. Do you know how I can fix this?
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Fu-Kwun Hwang
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Reply #4 on: October 01, 2013, 10:33:42 pm » posted from:,,Satellite Provider

It is a problem due to Java. You need to update to latest java version. (Go to  http://java.com/download/index.jsp , download/install latest version).

You need to close browser while update the java.

Re-open browser and load the page again, allow the program to run, and it should work fine.

 Cheesy
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JacobHenry
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Reply #5 on: October 04, 2013, 06:17:05 am » posted from:,,Satellite Provider

It is a problem due to Java. You need to update to latest java version. (Go to http://java.com/download/index.jsp , download/install latest version).

You need to close browser while update the java.

Re-open browser and load the page again, allow the program to run, and it should work fine.

Cheesy


Thank you so much. I updated to latest Java and it is working now.
« Last Edit: October 04, 2013, 06:44:01 am by JacobHenry » Logged
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Give me a standpoint and I will move the earth. ...Archimedes (287-212BC)
 
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