# Thread: im not sure if this belongs here

1. ## im not sure if this belongs here

But i came across this problem and i cant seem to understand how to answer.

Pressure = force / unit area

Pressure = weight / unit area

The weight i was told to use was 175bs.

Scenario - you are standing on one square foot-12" on a side.

1) What is your pressure in pounds per square inch
2) Compare your pressure in psi to that of the atmosphere. Which is greater?

2. Originally Posted by johnq86
But i came across this problem and i cant seem to understand how to answer.

Pressure = force / unit area

Pressure = weight / unit area

The weight i was told to use was 235lbs.

Scenario - you are standing on one square foot-12" on a side.

1) What is your pressure in pounds per square inch
2) Compare your pressure in psi to that of the atmosphere. Which is greater?

1 sq foot =144 sq inches
so, take 235/144 which equals 1.63194...
assuming that the weight is distributed equally the psi would be approx. 1.63
the psi of the atmoshere is 14.7. which is slightly over 1 ton per square foot

3. ## how do u figure out the

psi of the atmosphere?

4. the psi of the atmosphere?

the psi of the atmosphere is dependent upon your position within the atmosphere. at sea level there is a lot more air pressure than if you were standing at the top of a tall mountain.
atmospheric pressure is measured with a barometer.
so, when you ask how do i find the psi of the atmosphere it is almost like asking how do i calculate temperature .

5. ## i meant 2 say

how did u come aobut this..the psi of the atmoshere is 14.7. which is slightly over 1 ton per square foot

6. Originally Posted by johnq86
how did u come aobut this..the psi of the atmoshere is 14.7. which is slightly over 1 ton per square foot
Atmospheric pressure - Wikipedia, the free encyclopedia