Turning effect of forces — Describe

What is meant by the moment of a force, and where is it used in everyday life?

The moment of a force is a measure of its turning effect about a pivot, calculated as moment = force × perpendicular distance from the pivot to the line of action of the force. Everyday examples include turning a nut with a spanner, opening a door by pushing on the handle far from the hinge, and using a seesaw or crowbar.