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Q4-The geometry of arm can be simplified as follow. Determine the moment of inertia about y
axis (Answer: ly =4.245(10') in“)
LL
2"
12"
ty
10"
4"
Moment of inertia of a rectangle
y
A = bh
%3D
1
bh3
12
C
%3D
1
ly
hb3
%3D
b
12
F12

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