LEVER

a rigid bar which turns a@ point called the fulcrum. The of the bar on each side of the are called the arms. By applying at one point on the L. a weight raised or resistance overcome at point. There are three cla es of according to the position of the in regard to the power and weight. a L. the power multiplied by its or distance from fulcrum, is equal the%weight multiplied by the arm. the force applied to the L. is le the resistance of the weight, the said to work at a mechanical advantage, if vice vers a, at a mechanical tage. L’s. of the first cla may either at an advantage or disadvantage, or the force may be exactly equal weight. L’s. of the second cla work at an advantage, and those third cla always at a disadvantage. + LEVER, CHARLES JAMES 72); drish novelist; ed. Trinity Dublin, where he was noted for lawle ne and ingenuity; became cian and entered Consular service;. while consul at Trieste; had a reputation for generosity, extravagance, and eccentricity. Novels include