- #1
zabachi
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Homework Statement
The problem is attached
Homework Equations
P=F/A
The Attempt at a Solution
I did the question like this (got wrong answer though):
Surface area of sphere=4∏r2=4×∏×0.252
Atmospheric pressure=1.01×105
Force=1.01×105×4×∏×0.252≈80000N
Actual answer 20000N
So my friend said something about using a circle instead? I tried it and indeed got the right answer. So why do we use a circle's area instead of sphere.
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