# - ```EM 306 - Hour Examination 2
Version C
There are four problems. Each problem is worth 25 points. Lf you draw correct. neat,
and appropriate fiee body diagrams, identify all unlcnowns necessary to solve the
problem, write a set of o equations in n unknowns that, when solved, will give correct
values for all requested unkoowns, and CLEARLY identify the n equations and the n
&amp;owns, you can earn 24 of tbe 25 points for that problem. Work careMly and slowly,
Apply t h e basic principles.
1.
TaLI
F
b
T h e truss is loaded as shown. Find the axial forces in DF, EF, and GI.
fBD
k700
u
= G
F 3 x - -7&quot;u b
S L p ; - Q l 7 * o f tU 3
b 1 7 . 0 6 %# &amp; @
ha,7
Y ~ F+
J
The b m e is loaded as shown. Find all of the forces acting on member ABDF.
R~~
3.
The geometric shape shown is a thin plate with a density of 2 kg per square meter.
Find the x and y coordinates of the center of gravity of the thin plate.
4.
The rigid structure is loaded as shown. Find the reaction forces at the supports.
-1
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```