NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/
September 23, 2018, 01:59:11 pm *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
 
   Home   Help Search Login Register  
Life is an inspiration. ..."Mahatma Gandhi(1869-1984, The greatest leader of modern India)"
Google Bookmarks Yahoo My Web MSN Live Netscape Del.icio.us FURL Stumble Upon Delirious Ask FaceBook

Pages: [1]   Go Down
  Print  
Author Topic: Barton’s Pendulum  (Read 15779 times)
0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
Fu-Kwun Hwang
Administrator
Hero Member
*****
Offline Offline

Posts: 3080



WWW
«
Embed this message
on: April 24, 2010, 05:33:56 pm » posted from:Taipei,T\'ai-pei,Taiwan

Quoted from: http://www.fas.harvard.edu/~scdiroff/lds/OscillationsWaves/BartonsPendulum/BartonsPendulum.html

All objects have a natural frequency of vibration or resonant frequency. If you force a system - in this case a set of pendulums - to oscillate, you get a maximum transfer of energy, i.e. maximum amplitude imparted, when the driving frequency equals the resonant frequency of the driven system. The phase relationship between the driver and driven oscillator is also related by their relative frequencies of oscillation.

Barton’s Pendulum consists of eleven pendulums hanging from a single thread that is connected between the two ends of a wooden rod (figure 1). The thread sags in this asymmetric way because the driver pendulum is a wooden ball 5cm in diameter, and the other ten are inverted Belmont Springs® drinking cups. The lengths of the driven pendulums range from 1.0m to 0.1m in 10cm intervals; the driver is 0.5m in length to the center of the ball. When the driver is given a swing, it sets into motion the other ten pendulums, with the result that the 0.5m driven pendulum has the largest amplitude and the other amplitudes being smaller and smaller the further away from the 0.5m they are.

You also get a very clear illustration of the phase of oscillation relative to the driver. The pendulum at resonance is π/2 behind the driver, all the shorter pendulums are in phase with the driver and all the longer ones are π out of phase.

You can change the length of the driven pendulum (change ID from 1-10).

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!


Here are youtube moves related to Barton's pendulum

http://www.youtube.com/watch?v=kODOL-QBzSM



http://www.youtube.com/watch?v=aZNnwQ8HJHU


* bartonpendulum.gif (4.82 KB, 561x446 - viewed 707 times.)
Logged
Pages: [1]   Go Up
  Print  
Life is an inspiration. ..."Mahatma Gandhi(1869-1984, The greatest leader of modern India)"
 
Jump to:  


Related Topics
Subject Started by Replies Views Last post
Double pendulum
Molecular Workbench
concord 0 10804 Last post August 21, 2005, 09:22:30 am
by concord
compound pendulum
Dynamics
qianger21 0 20868 Last post September 14, 2005, 02:45:21 pm
by qianger21
help: simple pendulum
Dynamics
foofz 3 22821 Last post November 11, 2009, 09:59:13 pm
by Fu-Kwun Hwang
Pendulum in an accelerated car
Kinematics
Fu-Kwun Hwang 2 27497 Last post June 09, 2010, 07:28:55 pm
by ahmedelshfie
Barton’s Pendulum
dynamics
ahmedelshfie 1 16965 Last post June 25, 2010, 08:14:22 pm
by ahmedelshfie
Powered by MySQL Powered by PHP Powered by SMF 1.1.13 | SMF © 2006-2011, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
Page created in 0.047 seconds with 22 queries.since 2011/06/15