Why do refrigerator doors suddenly need hulk strength to open at random times?
In: Physics
About the pressure – when you have something the size of a fridge door you only need a very small pressure difference to add up to a very large force holding the door shut.
Say the door is 30” x 40” – that’s 1200in^2
Even 0.1psi pressure difference here adds up to 120 pounds holding the door shut
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