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How much force is exerted on one side of an 8.50 $\mathrm{cm}$ by 11.0 $\mathrm{cm}$ sheet of paper by the atmosphere? How can the paper withstand such a force?

$F_{\mathrm{atm}}=0.95 \times 10^{3} \mathrm{N}=0.95 \mathrm{kN}$

Physics 101 Mechanics

Chapter 11

Fluid Statics

Fluid Mechanics

Elizabeth M.

July 12, 2020

What if we must do it using inches instead of cm?

Cornell University

Rutgers, The State University of New Jersey

University of Michigan - Ann Arbor

University of Washington

Lectures

03:45

In physics, a fluid is a substance that continually deforms (flows) under an applied shear stress. Fluids are a subset of the phases of matter and include liquids, gases, plasmas and, to some extent, plastic solids.

09:49

A fluid is a substance that continually deforms (flows) under an applied shear stress. Fluids are a subset of the phases of matter and include liquids, gases and plasmas. Fluids display properties such as flow, pressure, and tension, which can be described with a fluid model. For example, liquids form a surface which exerts a force on other objects in contact with it, and is the basis for the forces of capillarity and cohesion. Fluids are a continuum (or "continuous" in some sense) which means that they cannot be strictly separated into separate pieces. However, there are theoretical limits to the divisibility of fluids. Fluids are in contrast to solids, which are able to sustain a shear stress with no tendency to continue deforming.

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were asked how much force is exerted on one side of an eight 0.5 centimeter by 11 centimeter sheet of paper by the atmosphere. And then how can the paper would stand such a force? Oh, one atmosphere is 1.1 times 10 to the fifth Pascal's. The area across of our paper is 8.5 centimeters times 11 centimeters, or 93.5 centimeters squared. The force is the pressure times the area. We can plug that into a calculator, and we get 900 44 Newtons. And then when I asked, how can the paper would stand such a force? Well, that's just the pressure on one side. Actually, the pressure acts on both sides, so they cancel out. Now if you put paper. If you put paper on one side having a vacuum tried to seal a vacuum pump with paper, obviously that wouldn't work because the paper would care

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