11.56:
(a) and (b)
Lower rod:
)
cm
0
.
8
(
)
cm
0
.
4
)(
N
0
.
6
(
:
0
p
A
=
=
Σ
τ
N
0
.
3
=
A
N
9.0
N
3.0
N
0
.
6
N
0
.
6
:
0
3
=
+
=
+
=
=
Σ
A
T
F
Middle rod
:
)
cm
0
.
5
)(
N
0
.
9
(
)
cm
0
.
3
(
:
0
p
=
=
Σ
B
N
15
=
B
N
24
N
9.0
N
15
:
0
3
2
=
+
=
+
=
=
Σ
T
B
T
F
Upper rod
:
)
cm
0
.
6
(
)
cm
0
.
2
)(
N
24
(
:
0
p
C
=
=
τ
Σ
N
0
.
8
=
C
N
32
N
8.0
N
24
:
0
2
1
=
+
=
+
=
=
Σ
C
T
T
F

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