my results are that simple machines work by using force and some work.
The work ouput of the second machine will usually be more than the work input of the first machine.
Increase Work
simple machine
the work a machine does is the work output what it takes to do the work is the work input
Work
Scissors are a simple machine. A simple machine makes work easier to do. (not hard work) What type of simple machine are they? They are a lever. Levers have fulcrums or pivot points. The pivot point of the scissors are the crossing section.
The mechanical advantage of a compound machine is the multiple of the separate mechanical advantages of each simple machine. The efficiency of the compound machine is also the multiple of the separate efficiencies of each simple machine. So the work in to the first machine multiplied by all of the simple machine efficiencies gives you the work out of the last machine
Simple Machine
A simple machine.
WORK!
Doing work.
The simple machine in this case is a wedge. The threads and cap of the screw work together to wedge two materials together.