Visual Approach to Structural Analysis
DEFNITIONS
Force
Concurrent Forces
Colinear Forces
Parallel Forces

UNIT A
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UNIT B
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UNIT C
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The simplest way to define a force is by just thinking of pull or push. More generally, force is defined as an action that tends to disturb a body. This disturbance can be thought of as translation, rise, fall, rotation, spinning, and so forth.