With what force the air presses on a palm with an area of 50 cm square at an atmospheric pressure of 750 mm. hg.?
| January 28, 2021 | education
The pressure is equal to the force acting on the surface, referred to the surface area:
P = F / S;
Hence:
F = P * S;
Let’s translate the dimensions from the problem conditions into SI units:
750 mm. rt. Art. = 99 992 Pa;
50 cm2 = 0.005 m2;
F = 99 992 * 0.005 = 499.96 N.
Answer: F = 499.96 N.
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