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
Had Enough (The Who song) Had Enough (The Who song) "Had Enough" is a song written by The Who bassist John Entwistle, and featured on their eighth studio album, "Who Are You". It was also released as a double A-sided single with "Who Are You", making it Entwistle's second single A-side, after "Postcard" from "Odds & Sods" in 1974. Like "905", "Had Enough" was planned to feature on a rock opera in the process of being written by Entwistle, but was never finished. It was written a long time before work was started on "Who Are You". The lyrics describe the main character of the