Levers have existed since prehistoric times. There is no record of who invented levers. The earliest mention of levers of which there is a record was by Archimedes, but they were in use long before his time.
The second class lever was not specifically "invented" by a single individual. It is a type of lever identified by the relative positions of the effort, fulcrum, and load. Examples include wheelbarrows and nutcrackers. The concept of levers has been recognized since ancient times.
The earliest remaining writings regarding levers date from the 3rd century BC and were provided by Archimedes.The screw was one of the last of the simple machines to be invented. It first appeared in ancient Greece, and by the first century BC was used in the form of the screw press and the Archimedes screw, but when it was invented is unknown.
fulcrum
Archimedes is the Greek scientist who discovered the principle of the lever and invented the double pulley. He did not invent the catapult but he did improve it. He also discovered the when an object is place in fluid, the volume of the fluid that is displaced is equal to the volume of the object.
A lever pivots on its fulcrum, which is the fixed point where the lever rotates. The position of the fulcrum affects the mechanical advantage and function of the lever.
There are no records of whom or where the lever was invented
it was invented before 2013
maybe the pulley but not the lever he invented the pulley but not the lever
it was invented in the early 1343
No one really knows when it was actually invented.
Lever was known to man since the dawn of the civilisation. It was even before lawyers were invented, so it unluckily could not be patented. http://en.wikipedia.org/wiki/Lever
early 1700s
the lever
Spencer
Archimedes, the Man
The second class lever was not specifically "invented" by a single individual. It is a type of lever identified by the relative positions of the effort, fulcrum, and load. Examples include wheelbarrows and nutcrackers. The concept of levers has been recognized since ancient times.
The lever is generally considered to be the first simple machine invented by humans.