20
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Example 4: (Continued)<br />
Y = 8.96 x 10 11 Pa; F = 1<strong>20</strong> N;<br />
L = 8 m; A = 1.77 x 10 -6 m 2<br />
8 m<br />
Y<br />
F = 1<strong>20</strong> N; L L = ?<br />
L<br />
FL FL<br />
or L<br />
1<strong>20</strong> N<br />
AL<br />
AY<br />
FL (1<strong>20</strong> N)(8.00 m)<br />
L<br />
<br />
-6 2 11<br />
AY (1.77 x 10 m )(8.96 x 10 Pa)<br />
Increase in length:<br />
L L = 0.605 mm
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