Lever resistance (or load). It is common to call the input force "the effort" and the output force "the load" or "the resistance." This allows the identification of three classes of levers by the relative locations of the fulcrum, the resistance and the effort: These cases are described by the mnemonic "fre 123" where the fulcrum is in the middle for the 1st class lever, the "r"esistance is in the middle for the 2nd class lever, and the effort is in the middle for the 3rd class lever. The lever is a movable bar that pivots on a fulcrum attached to
Lever Brothers Factory was founded in 1885 by William Hesketh Lever. Lever Brothers Ltd was incorporated in Australia on 21 June 1894. Soon after this, in 1897, Lever Brothers established a plant at Balmain to extract oil from copra which was shipped back to Liverpool, England. In 1900, the Balmain plant began to manufacture Sunlight soap and glycerine, and other products followed. Early in 1914, William Lever visited Melbourne as part of a worldwide tour of Lever interests. During the visit he met with J.Kitchen & Sons, who were established soap manufacturers, and offered to amalgamate the two firms. After consideration, it was