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28-09-2005, 10:46 AM   #1
hollw man
Registered User
Join Date: Apr 2004
Posts: 4
Newton's pendulum
Hi all!

I try to create a simulation of the newton's pendulum with the dynamics and I encounter problems!

I've created five spheres with a gravity field and a nail constraint! When I launch my simulation, the spheres collide themselves correctly but not as the same way as a Newton's pendulum!

All the spheres are moving how you can see below in my simulation!
With a Newton's pendulum, just the first and the last sphere move!

Here is my test:

What I want to do:

Please help me!

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28-09-2005, 12:57 PM   #2
Alan's Avatar
Join Date: Oct 2002
Location: London, UK
Posts: 2,800
do they have their mass attribute set correctly? what I would do is use mass and also instead of gravity try a uniform field (gravity ignores mass and applies the force no matter what, uniform takes into account the mass of the object.) good tute on it here:

Technical Director - Framestore

Currently working on: Your Highness

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28-09-2005, 01:41 PM   #3
hollw man
Registered User
Join Date: Apr 2004
Posts: 4
Thanks for your answer!

I've tried the uniform field and the result is a little bit better! But unfortunately the middle spheres are still moving!

do they have their mass attribute set correctly?
I think yes!
Here is my project file:

If you can see it, it would be very nice of you!


Last edited by hollw man; 29-09-2005 at 11:17 AM.
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