Fixed Pulley: The axis position is fixed and unmoving. It can change the direction of force but cannot save effort.
Movable Pulley: The axis position can move. It cannot change the direction of force but can save effort.
Pulley System: Composed of fixed pulleys and movable pulleys. It can both save effort and change the direction of force.
Know the three types of pulleys
Fixed pulley: The position of the shaft is fixed, The direction of force can be changed, but effort cannot be saved.
Moving pulley: The position of the shaft can be moved, The direction of force cannot be changed, but effort can be saved.
Pulley block: consists of fixed pulley and movable pulley block It is installed, which can not only save labor but also change the use of force direction.
