## Applied Mechanics and Graphic Statics Free body diagram is an

Isolated joint with all the forces, internal as well as external, acting on it
None of these
Isolated joint with only body forces acting on it
Isolated joint with internal forces acting on it

(2/3) g sin 0
g sin 9
(1/3) g sinB
(2/3) g cos 9

½ l
l/√2
2/√3 l
¾ l

M’L’r2
M’L-‘T*
M’L’T3
M’L2T2

## Applied Mechanics and Graphic Statics According to Law of Triangle of Forces

Three forces acting at a point, can be rep-resented by the sides of a triangle, each side being in proportion to the force
If the forces acting on a particle be represented in magnitude and direction by the two sides of a triangle taken in order, their resultant will be represented in magnitude and direction by the third
If three forces acting on a, point can be represented in magnitude and direction, by the sides of a triangle taken in order, these will be in equilibrium
Three forces acting along the sides of a triangle are always in equilibrium

314
5
25
1.5