Plunging into water feet first, as streamlined as you can be

  • #1
249
26
There is a thread on plunging into water but it doesn't specify how you land. Consider that a man plunges into the water vertically with his toes pointing downwards, streamlining his body to the maximum possible extent. How can you calculate if the person falling will die or not? Rather how can you calculate the force he will be subjected to when he hits the water?
 

Answers and Replies

  • #2
Nugatory
Mentor
13,227
6,083
There are a few old threads on that question. An exact calculation of the forces over time is very difficult, but you can get a pretty decent estimate just by considering that in the time between first touching the water and being completely submerged, a volume of water equal to the volume of the body must be displaced.
 
  • #3
249
26
Right. Got that part. But will dV/dt give an idea of the force?
 

Related Threads on Plunging into water feet first, as streamlined as you can be

  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
6
Views
2K
Replies
55
Views
9K
Replies
4
Views
729
Replies
1
Views
8K
Replies
13
Views
14K
Replies
5
Views
6K
  • Last Post
Replies
9
Views
3K
Replies
1
Views
1K
Replies
1
Views
624
Top