Pressure Problem

1. Nov 6, 2007

Sucks@Physics

A small quanitity of water is poured into a can, the water is brought to a boil. Then the can is sealed with a rubber stopper. As you watch, the can is slowly crushed with sounds of metal bending. Assuming the dimensions of the can are 0.24m x 0.16m x 0.10m and the inside of the can is in a perfect vacuum, what is the total force exerted on the can by the air pressure?

Now I don't just need the answer i need to know how to solve it. Thanks in advance !

Last edited: Nov 6, 2007
2. Nov 6, 2007

learningphysics

what is the pressure outside the can? what is the surface area of the can. I assume the can is a cube given the dimensions...

what is the relationship between force, pressure and area?

3. Nov 6, 2007

Sucks@Physics

That's all the question gives me. I'm guessing 1 atm pressure and the area is .00384 m from the given dimesions? I'm not completely sure

4. Nov 6, 2007

learningphysics

you calculated the volume of the cube... you need the surface area. so the sum of the areas of the 6 sides. convert 1 atm to pascals...

Last edited: Nov 6, 2007
5. Nov 7, 2007

Sucks@Physics

I still dont know how to do this problem can some1 give me formulas?

6. Nov 7, 2007

learningphysics

length = 0.24m
width = 0.16m
height = 0.10m

can you find the area of the 6 sides of the cube?

side 1 and 2... length*width
side 3 and 4... width*height etc...

Last edited: Nov 7, 2007
7. Nov 7, 2007

.1568

8. Nov 7, 2007

learningphysics

exactly. And what's the pressure outside the can in Pa?

9. Nov 8, 2007

Sucks@Physics

1.01 KPa so you just multiply them together correct?