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28. (a) According to Pascal’s principle
F
/
A = f
/
a
→
F =
(
A
/
a
)
f
.
(b) We obtain
2
3
2
(3.80 cm)
(20.0
10 N) = 103 N.
(53.0 cm)
a
fF
A
==
×
The ratio of the squares of diameters is equivalent to the ratio of the areas. We also note
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics

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