Lever a place to stand, and I shall move the Earth with it' is a remark of Archimedes who formally stated the correct mathematical principle of levers (quoted by Pappus of Alexandria). It is assumed that in ancient Egypt, constructors used the lever to move and uplift obelisks weighing more than 100 tons. A lever is a beam connected to ground by a hinge, or pivot, called a fulcrum. The ideal lever does not dissipate or store energy, which means there is no friction in the hinge or bending in the beam. In this case, the power into the lever equals
Lever action and would dig into the ground if the weapon was not situated high enough on its mount. The Knötgen automatic rifle is another example. While lever-action rifles have always been popular with hunters and sporting shooters, they have never been widely accepted by the military. One significant reason for this is that it is harder to fire from the prone position with a lever-action rifle than it is with a straight-pull or rotating-bolt bolt-action rifle. Another reason is ammunition. While lever-action rifles generally possess a greater rate of fire than bolt-action rifles, lever-action firearms are also generally fed from a