Force exerted on mirror by laser beam

  • #1
How much force (in Newtons) is exerted on a mirror when a 12.0W laser beam of red light (675 nm) strikes the mirror normal to its surface? (Assume no light is absorbed)

How how how how???
kthx
 

Answers and Replies

  • #2
Doc Al
Mentor
45,017
1,290
Hint: how would you solve the problem of a rubber bullet bouncing off a wall? Think Impulse = Force x Time = change in Momentum.

Does light have momentum?
 

Related Threads on Force exerted on mirror by laser beam

  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
7
Views
34K
  • Last Post
Replies
4
Views
877
  • Last Post
Replies
6
Views
2K
Replies
3
Views
7K
Replies
4
Views
2K
  • Last Post
Replies
3
Views
949
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
10
Views
5K
Top