- #26

Chestermiller

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The external atmospheric pressure actsHello,

Could you please explain as to why the force exerted by external atmospheric pressure acting on the outer curved surface of the hemisphere would be P_{atm}πR^{2}?

**to the outer curved surface at each location on the surface. See what you get if you integrate this (vectorially) over the entire curved surface area of the hemisphere.**

*perpendicular*Chet