$22$ BASIC PRINCIPLES

PROBLEMS

$2\mathrm{.}1$

$($a$)$ Determine the reactions at A and $B$ using only the method of virtual work

$($b$)$ Determine the reactions at A and $B$ using free$-$body diagrams and equili equations.

$($c$)$ Compare results of parts $($a$)$ and $($b$).$ Resolve any differences.