The picture shows a two-dimensional free body diagram of a truss with a pin joint at one end.

The free body diagram at the pin joint should show:
a. no forces at the joint
b. only parallel force component
c. only perpendicular force component
d. both parallel and force components

(I think it is d?)

2 answers

yep, but in reality, a pin joint can have torsion also. I assume you forgot to type parallel AND PERPENDICULAR force
The answer is c
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