Describes, in both pictures and words, how gears are used to increase the mechanical advantage of a system.

Explains the relationship between force and mechanical advantage with diagrams, examples and calculations.

Image of force and mechanical advantage

Good defintion of power supplemented with good diagrams and calculations.

Good defintion of power supplemented with good diagrams and calculations.

Explains how much power is needed to accomplish a task in a specific time. Uses efficiency and power to find the power rating of a motor for a specific application.

Explains how much power is needed to accomplish a task in a specific time. Uses efficiency and power to find the power rating of a motor for a specific application.