direction cosines

Components of a Force

Forces acting at some angle from the the coordinate axes can be resolved into mutually perpendicular forces called components. The component of a force parallel to the x-axis is called the x-component, parallel to y-axis the y-component, and so on.

Resultant of Concurrent Force System

Resultant of Concurrent Coplanar Forces Using Complex Numbers | Engineering Mechanics

Resultant of a force system is a force or a couple that will have the same effect to the body, both in translation and rotation, if all the forces are removed and replaced by the resultant.

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