PendulumJava
Applet
simplify version
How to change parameters?
Set the initial position
Click and drag the left
mouse button
The horizontal position of the pendulum will follow the mouse Animation
starts when you release the mouse button
-
Adjust the length
dragging the pointer (while > holding down the
left button)
from the support-point (red dot) to a
position that sets the length you want.
Animation starts when you release the mouse button
-
Change gravity g
Click near the tip of the red arrow,
and drag the mouse button to change it (up-down).
-
Change the mass of the bob
Click near the buttom of the black stick,
and drag the mouse button to change it (up-down).
Information displayed:
1. red dots: kinetic energy K = m v*v /2 of
the bob 2. blue dots: potential energy U = m g h
of
the bob
Try ro find out the relation between kinetic
energy and pontential energy! 3.black dots (pair) represent
the peroid T of the pendulum
move the mouse to the dot :
will display information for that dot in the textfield
Click show checkbox to show more information
blue arrow(1): gravity green arrows(2): components of gravity red arrow
(1): velocity of the bob
Try to compare velocity
and the tangential component of the gravitional force!
The calculation is in real time (use Runge-Kutta 4th order
method). The period(T) is calculated when the velocity change direction.
You can produce a period verses angle ( T - X
) curve on the screen,just started at different positions and wait for
a few second.
Any suggestions! Please click hwang@phy03.phy.ntnu.edu.twCheck
out other physics java applets
Last modified :
URLs link to this page
-
http://www.tp.umu.se/TIPTOP/vlab/
-
http://www.dalton.org/groups/astro/physics/physics.html
-
http://cnr2.kent.edu/~johnson/physical/ch3.html
-
http://www.west.it/ensites/pja.htm
-
http://www.htk.fi:80/kirjasto/matema.htm#fysiikka
-
http://www.kauhajoki.fi/lukio/hypeti/fysiikka.html
-
http://didaktik.physik.uni-wuerzburg.de/~pkrahmer/home/java1.html
-
http://www.avmz.uni-siegen.de/~volker/projects/PfI/W3-short/samples.html
-
http://ourworld.compuserve.com/homepages/Peter_Krahmer/java1.htm
-
http://heart.engr.csulb.edu/~rtoossi/physics/demos.html#energy
-
http://cccsrv.trevano.ch/physics.html
-
http://didaktik.physik.uni-wuerzburg.de/~pkrahmer/home/java1.html
-
http://www.geocities.com/CapeCanaveral/4310/java1.htm
-
http://www3.sympatico.ca/cmichael/intro/index2.htm
-
http://www.df.uba.ar/~dgomez/mec/links.html
-
http://www.cyberschool.co.za/science/wenpo.htm