Equivalence principle question

In summary, there are two indications that a free falling body is accelerating: when you feel weight on your feet and when you feel no acceleration. However, when you are in an inertial frame, which is the same as free fall, you cannot be in inertial motion.
  • #36
Ibix said:
But the surface, and any region inside except at the very center, does have proper acceleration outwards from the center, just to be clear
Thanks. Now I understand forces preventing every parts of the Earth free falling and keeping the shape of the Earth provide proper acceleration. For an example when I am standing, the floor push my feet to give proper acceleration g upward. Skydivers keep zero proper acceleration while falling but will start to get proper acceleration after unfortunate crash.
 
  • Like
Likes vanhees71 and Dale
Physics news on Phys.org

Similar threads

  • Special and General Relativity
2
Replies
36
Views
2K
  • Special and General Relativity
Replies
11
Views
1K
  • Special and General Relativity
Replies
12
Views
1K
  • Special and General Relativity
2
Replies
44
Views
4K
  • Special and General Relativity
2
Replies
49
Views
3K
  • Special and General Relativity
Replies
9
Views
992
  • Special and General Relativity
Replies
2
Views
1K
  • Special and General Relativity
Replies
11
Views
1K
  • Special and General Relativity
Replies
4
Views
972
  • Special and General Relativity
Replies
10
Views
1K
Back
Top