The principle of labor-saving pliers

Date:Jun 01, 2020

The principle of leverage bai du is also called "lever balance condition". To balance the lever, the two moments (product of force and arm) acting on the lever must be equal. That is: power × power arm = resistance × resistance arm, expressed by algebraic formula as F1 · L1 = F2 · L2. In the formula, F1 represents power, L1 represents power arm, F2 represents resistance, and L2 represents resistance arm. As can be seen from the above formula, to balance the lever, the power arm is several times the resistance arm, and the power is a fraction of the resistance

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