A barometer kept in an elevator accelerating upward reads 76 cm. The air pressure in the elevator is

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KollegeApply · Accepted Answer

> 76 cm When the elevator is going upwards with acceleration a, the effective acceleration is a' =(g + a). Thus, pressure is given by P = hρ(g + a) Air pressure in the elevator = P = h'ρg Because the pressure is the same, h' > h. ∴ Air pressure > 76 cm

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