Research On Lever
Infinity M, Chris R
How does a LEVER works ?
A lever works by helping you overcome gravities force. This is done by making use a a fulcrum.
Why all machines are not 100% efficient ?
Because some energy has to always be used to overcome friction. 100% efficiency could possibly only existence in space, because there is lack of gravity and friction.
Difference between AMA and IMA
Actual Mechanical Advantage-Determined by measuring the actual forces on a machines.
Ideal Mechanical Advantage-Is the mechanical advantage in the absence of friction.
Identify the two Forces that work against machines ?
Action and Reaction
2 Machines in Real Word
The Scissors is using a lever and wedge and that's two simple machines in one .
Rube Goldberg (1883-1970) was a Pulitzer Prize winning cartoonist, sculptor and author.