* [http://www.enchantedlearning.com/physics/machines/Levers.shtml Levers: Simple Machines] Flash animations of various classes of levers. Levers, fulcrums and loads described and illustrated. | * [http://www.enchantedlearning.com/physics/machines/Levers.shtml Levers: Simple Machines] Flash animations of various classes of levers. Levers, fulcrums and loads described and illustrated. |