A double pulley system is simple. Instead of one wheel like the
single pulley system has, the double pulley system has two
wheels and carries more heavier loads than the single pulley system
can hold.
With the string from the movable pulley
Yes an elevator is a movable pulley!
The two kinds of pulleys are fixed pulleys and movable pulleys. Fixed pulleys are stationary and change the direction of the force applied, while movable pulleys have a free end that moves and both change the direction of the force and provide a mechanical advantage.
single fixed pulley, single movable pulley and single fixed and movable pulley. :-)
A crane is a movable pulley
a pulley that is attached to the resistance and moves with it
multiply
a coumpound pulley is when there is a fixe pulley and movable pulley working together
a coumpound pulley is when there is a fixe pulley and movable pulley working together
The difference between a fixed pulley and a movable pulley is, the wheel of a fixed pulley does not move because the wheel is attached to a wall, ceiling, or other object. Unlike a fixed pulley, a movable pulley's wheel does move. The wheel on a movable pulley is not attached to a wall or other object. A fixed pulley changes work by changing the direction of a force. A movable pulley changes work by reducing the input force needed to lift heavy objects. A movable pulley changes the direction of the input force and reduced it. A movable pulley also increases the output force.
Single movable pulley
A movable pulley reduces the amount of force needed to lift an object because it changes the direction of the force. When using a movable pulley, the load is shared between the pulley and the user, making it easier to lift heavy objects.