FORCES AND STRUCTURES

Force - the influence that tends to change the speed and direction of a stationary or a moving body. 

FORCES AND STRUCTURESThe effect of a force depends upon its:

MAGNITUDE Measure of how strong a force is Newtons (N)

DIRECTION Ex. Push vs Pull

POINT & PLANE of Application Where and how a force is applied Ex. High vs Low

TENSION, COMPRESSION,

TORSION AND SHEAR

TENSION – pulling or stretching force

COMPRESSION- pushing or squeezing force

TENSION

COMPRESSION

TORSION – twisting force – applying opposite rotational forces

SHEAR- two parallel opposite forces applied at same point- causes tearing

Draw and label a diagram showing the forces acting on and within a flagpole and its flag in a strong wind.

Strut - A member of structure that is subjected to compression.

Tie - A member of structure that is subjected to tension.