Applied Mechanics and Graphic Statics
If the given forces P₁, P₂, P₃ and P₄ are such that the force polygon does not close, then the system will

Be in equilibrium
Both (A) and (C)
Always reduce to a couple
Always reduce to a resultant force

ANSWER DOWNLOAD EXAMIANS APP

Applied Mechanics and Graphic Statics
Free body diagram is an

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

ANSWER DOWNLOAD EXAMIANS APP

Applied Mechanics and Graphic Statics
The angle of friction is:

The force of friction at which the body is just about to move
The ratio of the friction and the normal reaction
The force of friction when the body is in motion
The angle between the normal reaction and the resultant of normal reaction and limiting friction

ANSWER DOWNLOAD EXAMIANS APP