Pressure Underwater

  • Thread starter vipertongn
  • Start date
  • #1
98
0

Homework Statement


(a) Calculate the absolute pressure at an ocean depth of 500 m. Assume the density of sea water is 1024 kg/m3 and that the air above exerts a pressure of 101.3 kPa. --I got this one its 5118900 Pa or N/m

(b) At this depth, what force must the frame around a circular submarine porthole having a diameter of 28.0 cm exert to counterbalance the force exerted by the water?

Homework Equations



F=PA

The Attempt at a Solution


F= (5118900)(pi*.28^2)=1.26e6

Thing is this is wrong and I have no idea why. Can someone enlighten me?
 

Answers and Replies

  • #2
783
9
Check your area of the circle equation. I think you are missing something there.

Thanks
Matt
 
  • #3
98
0
OH gosh i put in the diameter rather than the radius thanks so much
 
  • #4
783
9
Or you can keep the diameter. It is simply (pi*D^2)/4

Thanks
Matt
 

Related Threads on Pressure Underwater

  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
4
Views
25K
  • Last Post
Replies
7
Views
4K
Replies
3
Views
11K
G
  • Last Post
Replies
6
Views
5K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
8
Views
5K
  • Last Post
Replies
2
Views
10K
  • Last Post
Replies
2
Views
3K
Top