I remember my teacher saying that anti-lock brakes worked better

  • Thread starter cragar
  • Start date
  • #1
2,544
2

Main Question or Discussion Point

I remember my teacher saying that anti-lock brakes worked better because of the static friction coeffiecient was higher than the kinetic friction, but i never understood why. Is it beacuse when you stab the brakes their is a larger impulse?
 

Answers and Replies

  • #2
russ_watters
Mentor
19,425
5,566


The static friction coefficient between the wheels and the ground is higher than the kinetic friction coefficient. It doesn't have anything to do with how hard you push on the pedals - it is typical of most static and kinetic friction situations.
 
  • #3


carry out a simple experiment:
take an object ,keep it on a flat surface. Now start tilting the table SLOWLY. not down the angle with horizontal the surface makes at which the object just starts sliding. the this is alpha.
Now take a vibrating surface which continuously vibrates with a small amplitude. The vibration shall be in the horizontal direction and sufficiently rapid. Keep the object on it. tilt the surface. Note the angle again, say, beta.
compare alpha and beta.
you will find that alpha>beta. Why?
this is because coeff. of friction in static condition is more than than in dynamic condition.
 
  • #4
2,544
2


thanks for the responses guys, so when I raise the plane and its vibrating the object will slide sooner.
 

Related Threads on I remember my teacher saying that anti-lock brakes worked better

  • Last Post
Replies
3
Views
1K
Replies
24
Views
2K
Replies
29
Views
5K
Replies
2
Views
2K
Replies
6
Views
2K
Replies
2
Views
745
  • Last Post
Replies
12
Views
5K
Top