Free body force Diagrams

  • Thread starter Peter G.
  • Start date
  • #1
442
0
I was reading about those in my textbook and they drew an example of a block resting on a ramp. The diagram showed the force of friction.

How is there friction if the block is not moving?

Thanks,
Peter G.
 

Answers and Replies

  • #3
442
0
Ok, thanks!
 
  • #4
Femme_physics
Gold Member
2,548
1
Well, if any force is applied on the object (even if it's gravity pulling it down a slope) then there's static friction to prevent movement, or attempt to prevent it anyway (so it'll be opposite to where the force wants to cause movement). Once the force is strong enough to achieve movement on the object, static friction becomes kinetic friction, which-- curiously and interestingly enough, is always lower than the max static friction.
 

Related Threads on Free body force Diagrams

  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
3
Views
1K
Replies
1
Views
2K
  • Last Post
Replies
7
Views
27K
  • Last Post
Replies
6
Views
4K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
4
Views
763
Top