Jump to content
  • Advertisement
Sign in to follow this  
gofordream

collision with frictions dealt using tangent impulses

This topic is 1334 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

I was reading Bourg's "physics for game developers" second edition.
In page 117(chapter 5,Friction) , what confused me is the way to apply the tangent impulse.
The book writes :

[attachment=23871:formular.jpg]
 

v1+  is the velocity of body1 after the collision between body1 and body2.
v2+ is the velocity of body2 after the collision between body1 and body2.
why v1+ and v2+ both + (uJ)t/m1 ?
In my opinion,the right way to apply the tangent impulse is like this:
v1+ = ... + (uJ)t/m1
v2+ = ... - (uJ)t/m2
 
What's wrong?
Edited by gofordream

Share this post


Link to post
Share on other sites
Advertisement

Probably a typo. The tangent impulses must be equal and opposite as well.

I was agree with your second sentence.
But I also see this book's first edition and it's source code. It is consistent with those four formulas, so I don't think it's a typo.Maybe there is something I don't understand?

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

Participate in the game development conversation and more when you create an account on GameDev.net!

Sign me up!