The standard heart-lung machine typically includes up to five pump assemblies
Complex machine
a pulley
compound machine
it is made up of two or more simple machines
They are called compound machines. :)Hope that helps
Compound Machine
compound machine
Carpet is made on a big machine that threads the fibres together by weaving them in and out all along the width of the machine. As it goes up and down the machine rolls it up onto a plastic or cardboard tube.
That isn't a simple machine, it is a complex machine, made up of other simple machines.
Compound machines are things that are made up of 1 or more simple machines. A screw isn't made up of any simple machines unless you count the screw as a simple machine.
to build up the army in wwi
no