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Question
State Lami’s theorem.
Solution
If a system of three concurrent and coplanar forces is in equilibrium, then Lami’s theorem states that the magnitude of each force of the system is proportional to the sine of the angle between the other two forces.
i.e. |`vecF_1`| ∝ sin α, |`vecF_2`| ∝ sin β, |`vecF_2`| ∝ sin γ,
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