ENGR-2050
E.M. - Statics
Name
Date
Exam 2: Problem 1
Given:
Determine the location (x,y) of the center of gravity for the
concrete gravity wall shown.
Show the sub areas clearly in the
8 ft
drawing at left and include units.
Required:
x=?
y=?
Solution:
32 ft
3 ft
4 ft
19 ft
4 ft
ANSWERS
ENGR-2050
E.M. - Statics
Name
Date
Exam 2: Problem 2
Given:
Derive a generic equation for the location of the centroid x, in
terms of values a and h, for the area shown. Clearly show how to set up
the problem using integral calculus and perform the calculus derivation
by hand.
Required:
x=?
Solution:
ANSWERS
ENGR-2050
E.M. - Statics
Name
Date
Exam 2: Problem 3
Given:
Determine the internal forces in the indicated members of the
truss shown. Use the method of joints and do joints A, B, C in order.
Required:
FAB = ? (T or C)
FAC = ? (T or C)
FBC = ? (T or C)
FBD = ? (T or C)
FCD = ? (T or C)
FCE = ? (T or C)
Solution:
Joint A
Joint B
Joint C
ANSWERS
ENGR-2050
E.M. - Statics
Name
Date
Exam 2: Problem 4
Given:
Determine IX and kX for the composite area shown.
Required:
0.80 in
IX = ?
kX = ?
Solution:
7.2 in
0.80 in
5.0 in
ANSWERS
ENGR-2050
E.M. - Statics
Name
Date
Exam 2: Problem 5
Given:
Determine the reactions on the frame when a
= 80°
.
Required:
AX = ?
AY = ?
DX = ?
DY = ?
3.2 kN
Solution:
ANSWERS