Hi, Blue Energy here, today I will tell you about the pulley I made and the other kinds of pulleys there are.

What is a pulley?

a pulley is a wheel and axle with a string going over the wheel and that string has a hook and that hook gets attached to something you want to lift up. A pulley doesn’t make it easier to lift something but the more strings there are the easier it gets.

different kinds of pulleys.

there are more than one kind of pulley, for instance a fixed pulley or a compound pulley. the difference is pretty big because a fixed pulley is a wheel and axle that has a string with a hook on one side and a compound pulley is two wheels and two axles with a string up and down with a hook.