Static

Simple machine lever

“Give me a foothold and I will move the world.” Archimedes

Lever resolution is based on the “moment of a force about a point” and the principle of equilibrium.

F = F d

MF = 0

A) Yes,

Bp P = Br R

Where,

Power (P): force exerted on the lever in order to move a weight.

Resistance ( R ): Force to move using the lever.

Support point (O): place where the lever pivots.

Power arm (Bp): distance between the support point (O) and the point where the power is applied (P).

Resistance arm (Br): distance between the support point (O) and the point where the resistance is applied ( R ).

types of levers

first class lever

first class lever
Example: seesaw.

first class lever

Second class lever

Second class lever
Example: wheelbarrow.

Second class lever

third gender lever

third gender lever
Example: fishing rod.

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