There are three classes of levers, depending on the relative positions of the effort is applied, load, and fulcrum. 1  First-class levers have the fulcrum located between the load and the effort (LFE). If the two arms of the lever are of equal length, the effort must be equal to the load.
1 Ebro: From the 120 Foot level of the new cell tower, This is Ebro.
1 The Eiffel Tower is 1,063 feet (324 meters) tall, including the antenna at the top. Without the antenna, it is 984 feet (300 m).  It was the tallest manmade structure until the Chrysler Building was built in New York in 1930.