if it is a fixed pulley, itself doesnt move. If it is a rotating pulley, its joint probably doesnt move.
pulley
A fixed pulley.
The middle part of a pulley are wheel and axle.
Force and Resistance
An example of a fixed pulley would be a well. This is a fixed pulley because the pulley doesn't move even though it is attached to an object.
No.
Force and Resistance
Yes, for example you would want to move a gear so you would pull on one side of the pulley and it could get where you want it to get.
A pulley is used to move a heavy weight. You can use a pulley to lift something that you can't lift alone.
A sheave or pulley wheel is a grooved wheel often used for holding a belt, wire rope, or rope and incorporated into a pulley. The sheave spins on an axle or bearing inside the frame of the pulley. This allows the wire or rope to move freely, minimizing friction and wear on the cable. (A sheave is actually part of the pulley system.)
The grooves on the pulley wheel
The pulley.