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.
something that pulls up two things at once and double the weight!
two pulleys
well i know 3, fixed pulley, movable pulley and a pulley system (double pulley with fixed and movable pulleys). i guess its basically just the first 2.
functions of movable pulley
With the string from the movable pulley
Yes an elevator is a movable pulley!
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 fixed pulley, single movable pulley and single fixed and movable pulley. :-)
A crane is a movable pulley
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.
that the movable pulley is not easy to help in carrying heavy things
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