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 Margarine Unie, to form Unilever, the first modern multinational company. As part of the agreement, Lever Brothers changed its name to Unilever plc, and forms the British half of the dual-listed company. Although the two companies have separate shareholders and stock exchange listings, they have a common board of directors and essentially operate as one company. The Lever Brothers name was kept for a time as an imprint, as well as the name of the US subsidiary, Lever Brothers Company, and a Canadian subsidiary, Lever Brothers Limited. Lever Brothers was sold to a US capital firm Pensler Capital Corporation and