Why does the size of the cross-sectional area of a mercury barometer not affect the height of the enclosed mercury column?
Step 1 of 3
We have relation Pressure in fluid(P) = hg Where, h is height , dis density, g is acceleration due to gravity Cross sectional area is not affected the height of enclosed mercury column because the height of the in mercury barometer is determined by Force exerted by area i.e pressure not by force and fluid pressure depends on density and depth ,pressure at the bottom of wide column of mercury is no different than the pressure at the bottom of narrow column of mercury of the same depth. The weight of fluid per area of contact is the same for each . likewise with the surrounding air. Therefore barometer made with wide barometer tubes show the same height as barrow with narrow tubes of mercury
Textbook: Conceptual Physics
Author: Paul G. Hewitt
This textbook survival guide was created for the textbook: Conceptual Physics, edition: 12. The answer to “Why does the size of the cross-sectional area of a mercury barometer not affect the height of the enclosed mercury column?” is broken down into a number of easy to follow steps, and 21 words. Since the solution to 17E from 14 chapter was answered, more than 368 students have viewed the full step-by-step answer. This full solution covers the following key subjects: mercury, enclosed, barometer, column, Cross. This expansive textbook survival guide covers 45 chapters, and 4650 solutions. Conceptual Physics was written by and is associated to the ISBN: 9780321909107. The full step-by-step solution to problem: 17E from chapter: 14 was answered by , our top Physics solution expert on 04/03/17, 08:01AM.