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 Ebro, over 900 kilometres long, rises in the Cantabrian Mountains and empties via a large delta into the Mediterranean at the southern edge of Catalonia. Fed by several tributaries from the Pyrenees to the north and the Sistema IbÃ©rico to the south, the Ebro is Spainâs largest river in volume. On its way it touches Castilla-LeÃ³n and the Basque country before crossing La Rioja, Navarra, AragÃ³n and Catalonia.