Relativistic Lightning on Train Problem

  • Thread starter TFM
  • Start date
  • #1
TFM
1,026
0

Homework Statement



Suppose the two lightning bolts shown in the figure 37.5a in the txtbook are simultaneous to an observer on the train.

Show that they are not simultaneous to an observer on the ground.

(Relevant Diagram Attached)

Homework Equations





The Attempt at a Solution



Thios is a long written Answer of Mastering Physics, but I am not quite sure what soirt of answer they are looking for, any ideas would be greatly appreciated,

TFM
 

Attachments

  • Relativbity Lightning Train.bmp
    200.4 KB · Views: 1,265

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
25,838
256
Hi TFM! :smile:

Assuming they don't want you to use the Lorentz transformations …

… my guess is that they want you to draw in rays of light going between Mavis and A´ or B´,

and then describe how Stanley sees those rays. :smile:
 
  • #3
TFM
1,026
0
Assuming that the train is moving, then surely the lightning bolts will travel equal distances to Mavis in the middle as they have to travel equal distances, but to Stanley, they rays have to travel different distances. But this doesn't seem to be related to relativity?

TFM
 
  • #4
tiny-tim
Science Advisor
Homework Helper
25,838
256
… But this doesn't seem to be related to relativity?

Hi TFM! :smile:

It's related to the constancy of the speed of light.

The question is designed to make you see that once we assume that everyone regards the speed of light as c, then the whole of special relativity follows! :smile:
 
  • #5
TFM
1,026
0
That makes Sense!

Thanks for the Advice, Tiny-Tim :smile:

The Ferry Man
 

Suggested for: Relativistic Lightning on Train Problem

Replies
13
Views
534
Replies
1
Views
233
  • Last Post
Replies
7
Views
445
Replies
2
Views
362
  • Last Post
Replies
14
Views
803
  • Last Post
2
Replies
35
Views
2K
Replies
1
Views
398
Replies
23
Views
449
Replies
6
Views
120
Top