QUESTION $3$

$3\mathrm{.}1$ Briefly explain simple trusses, methods of joints, and the difference between internal and

external redundancy.

$3\mathrm{.}2$ Determine the force in each member of the truss in Figure $3.$ Set $F_1=10kN$ and $F_2=$

$15$ kN

Figure $3$: Truss subjected to loads