On the work done on a frictionless surface

  • #1
Work done = force applied * displacement

So if I exert N1 force on a mass placed over a friction less floor, then the displacement = ∞.
Then wont the work done = ∞.
How is possible???
 

Answers and Replies

  • #2
Orodruin
Staff Emeritus
Science Advisor
Homework Helper
Insights Author
Gold Member
17,334
7,205
In which direction are you applying the force and for how long?

If you apply the force parallel to the floor, then you will accelerate the mass and the work you perform with that force will turn into kinetic energy of the mass. If you apply the force normal to the floor, the normal force of the floor will cancel the force and there will be no movement and hence no work done.
 
  • #3
A.T.
Science Advisor
11,343
2,730
Then wont the work done = ∞.
Only if you apply the force over an infinite distance.
How is possible???
It isn't.
 

Related Threads on On the work done on a frictionless surface

  • Last Post
Replies
11
Views
3K
  • Last Post
Replies
14
Views
3K
  • Last Post
Replies
5
Views
3K
  • Last Post
Replies
3
Views
3K
Replies
3
Views
1K
  • Last Post
Replies
1
Views
1K
Replies
1
Views
647
Replies
9
Views
4K
  • Last Post
Replies
6
Views
3K
  • Last Post
Replies
4
Views
82K
Top