The applet design by prof Hwang, i just modified layout.
Original applet [url=]Gyroscope Model by Fu-Kwun Hwang [/url] posting by Lookang Wee

If there is no net external force acting on a body, then its momentum vector is fixed in space (i.e. moving along a string line). If there is no net torque acting on a revolving body, then its angular momentum vector is fixed in space. When there is net torque, the rate of change of angular momentum is equal to the torque. This simulation shows a spinning body has a kind of gyroscope stability. A tilted top spinning about its symmetry axis with an angular velocity w1 (w1=2.*pi/T1). The spinning axis will simultaneously swing around (precess) with singular frequency w2. w2=(mgr/I w1)

You can toggle view of angular momentum,gravitation force and torque vector. Change the self spinning period and see the change of precession frequency. Change the center of gravity (higher/lower the rotating disk) Change the scale and see the effect of inertia (proportional to r*r), so the precision frequency slower down as you increase the scale.

/htdocs/ntnujava/ejsuser/37048/users/egy/ahmed/Gyroscope_pkg/Gyroscope.propertiesFull screen applet or Problem viewing java?Add 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
Download EJS jar file(735.2kB):double click downloaded file to run it. (47 times by 10 users) , Download EJS source (3 times by 1 users) View EJS source