Chapter 4
Chapter 4
Chapter 4
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w 20<br />
w<br />
x<br />
=<br />
20<br />
9<br />
x<br />
9<br />
∑<br />
V =<br />
⎡ x ⎤<br />
F y<br />
= 0 ⇒ −V<br />
+ 75 −10x<br />
−<br />
⎢<br />
x =<br />
9 ⎥ ⎣ ⎦<br />
75 −10x<br />
−1.11x<br />
x<br />
1<br />
∑<br />
M<br />
S<br />
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0<br />
⇒<br />
M −<br />
75<br />
x −<br />
10<br />
x<br />
( )<br />
2<br />
−<br />
2<br />
M =<br />
75x<br />
+ 5x<br />
2<br />
2<br />
− 0.370x<br />
3<br />
1 0<br />
2<br />
(20)<br />
x ⎡ x ⎤<br />
x<br />
⎢<br />
(20)<br />
x<br />
3<br />
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9 ⎥<br />
⎣ ⎦<br />
0
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