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A compound machine is made up of two or more simple machines. Most of the machines we see today are compound machines, some examples are: zippers, can openers, bicycles, staplers, scissors, pencil sharpeners, ceiling fans, Pizza cutters, wheelbarrows, and bulldozers.

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Q: What kind of machine is made of two or more simple machines-?
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Why is a screw a simple machine and not a compound machine?

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.


A machine made of several simple machines is called?

A compound machine.


In a compound machine made up of two simple machines how is the work output of the first simple machine related to the work input of the second simple machine?

The work ouput of the second machine will usually be more than the work input of the first machine.


Is a crane a complex machine?

Yes, certainly. Look at the multiplicity of drive mechanisms, gears, drums, steering clutches, even specialized axles and differentials in some cases. Four arms might be ideal to conn a big Hammerhead!


What is a complex machine?

A complex machine, also known as a compound machine, is a machine that is a combination of several simple machines.A simple machine is defined as a machine that makes work easier by modifying or transmitting force or motion.A simple machine would be a wheel and axle or a wedge and jackscrew.A complex machine would be a car or a drill.Machine - is a device that helps us do work (work is a force that acts on an object to make the object move. To get work, you multiply force by distance)A simple machine - is a tool or device made up of one basic machine (there are 6 simple machines screw, ramp/inclined plane, wedge, pulley, wheel and axele, and levers.)ex. of simple machines are: (screw - screw, hose nozzle, etc.) (inclined plane - slide, ramp etc. ) (wedge -chisel, knife, etc.) (pulley - crane, flagpole, etc.) (wheel and axle - door knob, steering wheel, bicycle wheel, etc.) (Lever - 1st class lever: see -saw, 2nd class leer: wheelbarrow, 3rd class Lever: hockey stick, broom, etc.)a Complex Machine - is a system in which simple machines all work together, parts of a complex machine that have just one function are called subsystems and often contain a simple machine.ex. of complex machines can be as simple as scissors, or as complicated as a lab topA complex machine is really 2 or more simple machines in one machineex. Car or a bicycleComplex Machine - is a system in which simple machines all work together, parts of a complex machine that have just one function are called subsystems and often contain a simple machine. ex. of complex machines can be as simple as scissors, or as complicated as a lab topA complex machine is really 2 or more simple machines in one machineex. Car or a bicycleall the six machines can put together to makebig machine.