Forces at an angle (inclined forces)

In this video I continue the work on moments and look at the moment of a force when its’ line of application is not perpendicular to the point where moments are to be taken about. The method I prefer to use is resolving a force into two components.

Moment of forces at an angle (non perpendicular) - youtube Video

Example looking at how to solve a rigid body in equilibrium

  1. A uniform rod AB of length l has a ring at B which slides on a horizontal rough pole. The coefficient of friction between the rod and the pole is 0.2. The end A is attached by a light inextensible string of length l to a point C on the pole. Given that the pole is in equilibrium and inclined at an angle θ to the horizontal. Find the smallest value of θ.
Moments of a force | Equilibrium of a Rigid Body - Example - youtube Video