Glancing Elastic Collison

  • Thread starter Fizics14
  • Start date
  • #26
1,948
201
How does n=0 satisfy:

[itex]v_{f1}^2 + nv_{f2}^2 = v_{f1}^2 + v_{f2}^2[/itex]?

If n is very small it does not begin to satisfy the relationship. I think n=1 is the only solution.

By the way, billiards players know that the angle between the cue ball and object ball is 90° (absent spin on the cue ball).

AM

that's not the equation I got. My solution looks like

[itex]v_{f1}^2 + nv_{f2}^2 = v_{f1}^2 + n^2v_{f2}^2[/itex]
 
  • #27
Andrew Mason
Science Advisor
Homework Helper
7,662
385
that's not the equation I got. My solution looks like

[itex]v_{f1}^2 + nv_{f2}^2 = v_{f1}^2 + n^2v_{f2}^2[/itex]
Ok. Same thing. There is really a discontinuity at n=0. For any n in an arbitrarily small neighbourhood of 0, n does not come close to satisfying the equation.

The condition that the bodies recoil at 90° to each other is not met using classical mechanics if the mass of the second particle (the one initially at rest) is zero.

AM
 
Last edited:

Related Threads on Glancing Elastic Collison

  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
1
Views
5K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
3
Views
3K
Replies
15
Views
2K
  • Last Post
Replies
2
Views
1K
Replies
12
Views
2K
Replies
5
Views
603
Top