Physics - Moments
What is a moment?
The turning effect produced by a force around a pivot point.
What is the word formula for moments?
\[\text{moment} = \text{force} \times \text{perpindicular distance}\]
What is the principle of moments?
When a body is balanced, the total clockwise moment about a point equals the total anticlockwise moment.
Why are door handles on the opposite side of from the hinge?
Because it means you have the largest perpindicular distance and therefore the biggest moment.
What is a couple?
Two forces equal in magnitude but opposite in direction.
What is the formula for the torque of a couple?
\[\text{one of the forces} \times \text{perpindicular distance between them}\]