Lami’s Theorem

Lami’s theorem is applied in the static analysis of mechanical and structural systems.

The theorem is named after Bernard Lamy. 

According to this theorem, “if a body is in equilibrium under the action of three forces,

each force is proportional to the sine of the angle between the other two forces”. 

where AB, and C are the numerical values of three coplanar, concurrent and non-collinear forces,

which keep the object in static equilibrium,

and αβ, and γ are the angles directly opposite to the forces AB, and C respectively.

Lami's Theorem

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