Force is:

A motor is:

Torque is: 

A load is:

Effort is

Work is 

A gear train is

Axis means

Revolution means

Advantage means:

Both pulleys and gears can give you a mechanical advantage.

There are three types of pulleys: fixed, moveable, and compound. 

Fixed pulleys give you a mechanical advantage while moveable pulleys can only change the direction of a force.

You can calculate the mechanical advantage of a pulley system by measuring the amount of rope used. 

When you get a mechanical advantage from a pulley system, the trade off is that you will have to pull more rope to lift the load.

Gears are only capable of increasing force.

Driven gears are powered by a machine or human force, and the driving gear is moved by the driven gear. 

A compound pulley is useful because it can...

A gear train that has a large gear driving a small gear is designed for...

A gear whose driving gear spins on a vertical axis and driven gear spins on a horizontal axis is designed for...