Moments levers and gears

Moment of a force

force x distance

what is moment

turning effect of a force acting about a point

What distance measurement is used when calculating a moment?

The perpendicular distance from the pivot to the line of action of the force.

3 Parts of a Lever System

Load, effort, fulcrum

How can a lever be used as a force multiplier?

If the distance between the effort and pivot is greater than the distance between the pivot and load, the force applied on the load is greater than the effort force. This is since the moment on both the effort and load must be the same.

gears

wheels that rotate on an axle

driven gear is larger means

rotate more slowly but greater moment

driven gear smaller means

rotate more quickly but smaller moment