Friction Area?

  • #1

Main Question or Discussion Point

I heard the Firction does not care about area or at least the friction equations do not have a varible for area, if that is true then why is it hard to pull something like a table when 4 legs are on the ground then when two legs are on the ground?


- BeachMountain
 
Last edited by a moderator:

Answers and Replies

  • #2
SGT
Friction depends on normal force. If the four legs of the table are on the ground, the whole weight of the table contributes to the normal force. If you lift two legs, you are supporting part of the weight, so the normal force is less.
 
  • #3
ZA
13
0
SGT is exactly on the spot with the answer.
 

Related Threads for: Friction Area?

  • Last Post
Replies
1
Views
624
  • Last Post
Replies
6
Views
555
Replies
8
Views
8K
Replies
12
Views
2K
Replies
14
Views
4K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
17
Views
1K
  • Last Post
Replies
3
Views
2K
Top