Solved: Comparing Example 12.1 (Section 12.1) and Example

Chapter 12, Problem 3DQ

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QUESTION:

Comparing Example 12.1 (Section 12.1) and Example 12.2 (Section 12.2), it seems that 700 N of air is exerting a downward force of \(2.0\times 10^6\mathrm{\ N}\) on the floor. How is this possible?

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QUESTION:

Comparing Example 12.1 (Section 12.1) and Example 12.2 (Section 12.2), it seems that 700 N of air is exerting a downward force of \(2.0\times 10^6\mathrm{\ N}\) on the floor. How is this possible?

ANSWER:

Step 1 of 3

Inside the living room we have air, as air is in gaseous state; the atoms are molecules in gaseous are free to move in random directions. So the air molecules inside the room tend to move in random directions at greater speeds. Some of the air molecules near the walls and floor hit the walls and floor during their random motion.

As these air molecules repeatedly hit or collide with the floor, they create some pressure.

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