BOTH PARTS HELP It is always a good idea to understand the \"size\" of units. Th
ID: 2263152 • Letter: B
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BOTH PARTS HELP
It is always a good idea to understand the "size" of units. The objects listed below are resting on a hard surface. Categorize each object according to the pressure it exerts on the surface when placed on their side with the largest area, which is the bottom. Assume that the bottom of each object is flat and that the pressure refers to that above atmospheric pressure (that is, gauge pressure). A news report states that a man was crushed to death in an industrial accident. According to the article, the pressure the man experienced was "nearly 1,000 Pascals!" Based on this news report, what would you think about the veracity of their claims?Explanation / Answer
Pressure (Pa) is defined as P=F/A, and F=ma. The acceleration of the objects sitting on a flat surface is gravity. So the heavier the object the more Force it will have. The objects that are the heaviest may not necessarily have the highest Pressure because the Area of those objects reduces the pressure on one spot. Using these two equations you can estimate which object goes into each box. 1,000 Pa is equal to the outside atmospheric pressure, so the items that are lighter will be underneath 1,000 Pa.
The second part like I said above 1,000 Pa pressure is equal to about 1atm. The answer would be "Ridiculous! A 1,000 Pa pressure would not even hurt a person, much less kill him".
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