WORLD CIVILIZATION

Detailed explanation-1: -Actually, the more proper name for this simple machine is “lever and fulcrum, ‘’ since the lever depends on the fulcrum as a pivot.

Detailed explanation-2: -There are six basic simple machines: the lever, the wedge, the pulley, the wheel and axle, the inclined plane, and the screw. Archimedes used combinations of these machines to create such devices as Archimedes’ Claw, a catapult, and Archimedes’ Screw.

Detailed explanation-3: -Pulleys are simple machines that are used to transmit energy and motion. A pulley contains a wheel that holds a flexible rope, chain, cord, or belt and can either move or turn objects. While the pulley is considered a simple machine, it has more parts than the inclined plane and the lever.

Detailed explanation-4: -In fact, Archimedes is said to have perfected the use of a pulley for a crane and thus creating the first-ever block-and-tackle system. A story retold by many demonstrates his prowess in this.

Detailed explanation-5: -Simple machines that are widely used include the wheel and axle, pulley, inclined plane, screw, wedge and lever.