Non-Coplanar Forces:

In engineering, we come across situations where the forces working on a body may not be in one plane, for example, a crate supported by three cables in space, a precast concrete wall section held temporarily by four cables or a tower guy wire anchored via bolts. To solve problems of statics in a space of three dimensions, a lot of visualisation is required, as we have to draw three dimensional sketches on the familiar two dimensional plane of a sheet of paper. Vector notation shall be useful in solving out such problems by extending the principles developed in two dimensions to three dimensional spaces.