Question #97f22

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Question #97f22

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Answer 1 · 2016-03-18T01:44:50

$1 l b / f t^{2}$ $1lb//ft^2$

Explanation:

Pressure is defined as Force per unit area.

In the problem:

Weight $m g = 20 l b$ $mg=20 lb$
Area of the block of wood in contact with the table $5 \times 4 = 20 f t^{2}$ $5xx4=20 ft^2$

Pressure exerted $= \frac{Force}{Area} = \frac{Weight}{Area of contact} = \frac{20}{20}$ $="Force"/"Area"="Weight"/"Area of contact"=20/20$
$P r e s s u r e e x e r t d = 1 l b / f t^{2}$ $color(white)(Pressure exertd)=1lb//ft^2$

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Question #97f22

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