What is a lever? How are the orders of the lever determined?
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a rigid bar resting on a pivot, used to move a heavy or firmly fixed load with one end when pressure is applied to the other.This allows the identification of three classes of levers by the relative locations of the fulcrum, the resistance and the effort: Class 1: Fulcrum in the middle: the effort is applied on one side of the fulcrum and the resistance (or load) on the other side, for example, a seesaw, a crowbar or a pair of scissors.
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The lever is movable bat that pivots on a fulcrum attached to a fixed point.
three classes of levers.
Three classes of levers : fulcrum, load & efford
three classes of levers.
Three classes of levers : fulcrum, load & efford
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