It is simply called a wheel. It doesn't have a official name
Sheave is another name for the entire pulley, rather than the indentation.
A pulley system is made up of a pulley and a rope. A pulley is, in essence, a wheel with a groove going all the way around it so that a rope or a cable can fit in it securely. One could also run an indented track around a wheel.
The grooves on the pulley wheel
'A pulley'
This is called a pulley.
It is a idler pulley.
A wheel is an example of pulley
That would most likely be a pulley. A pulley is essentially a wheel on an axle that usually has a groove in the middle of its circumference that holds a rope, cable, belt, or chain. Pulleys are used to transmit motion rotationally and apply force in the direction of said motion. Two or more pulleys makes a tackle. Hope this is what you were looking for.
Because wheel and axle pulley and gear are simple machines
there are two kinds of pulleys. A movable pulley and a fixed pulley. But a wheel and axle have a lever and a inclined plane. [someone] :]
A pulley is a wheel but not an axle.
there are two kinds of pulleys. A movable pulley and a fixed pulley. But a wheel and axle have a lever and a inclined plane. [someone] :]