Lever fulcrum to where the output force is applied (point "B"), then the lever amplifies the input force. On the other hand, if the distance "a" from the fulcrum to the input force is less than the distance "b" from the fulcrum to the output force, then the lever reduces the input force. The use of velocity in the static analysis of a lever is an application of the principle of virtual work. A lever is modeled as a rigid bar connected to a ground frame by a hinged joint called a fulcrum. The lever is operated by applying an input
Évelyne Lever specifically for an American audience. She continues to write on and about 18th-century history. French English Évelyne Lever Évelyne Lever (known simply in English as Evelyne Lever) is a contemporary French historian and writer. She was married to a French historian, Maurice Lever, who is the author of "Sade". Lever was previously a research engineer at CNRS, and then began to focus more on 18th-century history. In particular, she focuses on certain people, including Louis XVI, Marie Antoinette and Madame de Pompadour. "Marie Antoinette: The Last Queen of France" was her first book to be published in the United States.