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.
The source of the river Ebro is in Fontibre , from the Latin words Fontes Iberis, source of the Ebro. Close by is the big artificial lake Embalse del Ebro created by the damming of the river. The upper Ebro rushes through rocky gorges in Burgos Province.