Frictional force disc brake

  • Thread starter protector
  • Start date
  • #1
3
0
I've been trying to figure out the friction coefficient of some brake pads. My test fixture only allows me to pull (F2) a brake disc between two brake pads clamped around the disc with a force F1. I then measure with a load cell the maximum force required for the brake disc to slip.

My question is simply, will the basic equation F=UxN be valid, or is it correct to assume that F= 2x(UN) in this scenario assuming F1 and U is identical for both brake pads?

I've been googling the topic and my impression is that both equations are used.
 

Attachments

  • friction.PNG
    friction.PNG
    4.6 KB · Views: 426

Answers and Replies

  • #2
rcgldr
Homework Helper
8,770
569
Should be F=2 x (UN). Imagine replacing one of the pads with a frictionless pad and then you'd get F = 1 x (UN) for the one pad with friction.
 

Related Threads on Frictional force disc brake

  • Last Post
Replies
2
Views
974
  • Last Post
Replies
5
Views
646
  • Last Post
2
Replies
28
Views
6K
  • Last Post
Replies
6
Views
847
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
0
Views
4K
  • Last Post
Replies
8
Views
1K
  • Last Post
Replies
5
Views
1K
  • Last Post
Replies
12
Views
5K
Top