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Byju's Answer
Standard XII
Physics
Pressure
In the pin-jo...
Question
In the pin-jointed plane truss shown below, magnitude of force in member ED is ________KN.
20
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Solution
The correct option is
A
20
F
B
C
=
F
C
D
=
0
F
B
D
=
20
K
N
At joint D,
F
A
D
c
o
s
30
=
F
E
D
c
o
s
30
⇒
F
A
D
=
F
E
D
F
A
D
c
o
s
60
+
F
E
D
c
o
s
60
=
20
F
E
D
=
20
K
N
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