## Applied Mechanics and Graphic Statics Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by

Its shorter side
The diagonal of the parallelogram which passes through the point of intersection of the forces
The diagonal of the parallelogram which does not pass through the point of intersection of the forces
Its longer side

½ tan α
½ cos α
½ sin α
2 cos α

60 m
30 m
50 m
Zero

5 kg
7 kg
1 kg
None of these

## Applied Mechanics and Graphic Statics The bending moment in an arch is proportional to

None of these
Vertical ordinate of funicular polygon
Intercept between the arch axis and the funicular polygon
Vertical ordinate of the arch

## Applied Mechanics and Graphic Statics On a ladder resting on a rough ground and leaning against a smooth vertical wall, the force of friction acts

Upwards at its upper end
Perpendicular to the wall at its upper end
Downwards at its upper end
Zero at its upper end