Answers:

Question$114$: The pin$-$connected truss is acted on by forces as shown Determine the resultant and locate with respect to point $A$

$M_A=8(4)+12(7)-20(7)=-256$

$M_{}=20(12)+12(15)+8(19)=572$

$R=\sqrt[\phantom{2}]{(-256{)}^2(572{)}^2}$

$R=382\mathrm{.}66$

Answers:

$R=382\mathrm{.}66$

$r_A=$