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Easy Java Simulations (2001- ) => dynamics => Topic started by: ahmedelshfie on April 25, 2010, 12:40:48 am



Title: Driven pendulum (forced oscillation)
Post by: ahmedelshfie on April 25, 2010, 12:40:48 am
This applet created by Prof Hwang
Modified by Ahmed
Original project Driven pendulum (forced oscillation) (http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1597)

There are three springs all driven by external force with different frequency.
The resonance frequency is determined by $\omega_0=\sqrt{k/m}$ where k is the spring constant, m is the mass (k,m can be adjusted with slider).
When sync check box is checked:
The driven frequency for left spring is $ratio*w_0$,
The driven frequency for center spring is $w_0$,
The driven frequency for right spring is $ratio/w_0$.

You can find the phase between oscillation and external force.
A damping force is introduced to prevent the amplitude become infinity.