Question

Lami's theorem is applicable only for

A) Non-Concurrent forces B) Coplanar forces C) Coplanar and concurrent forces D) Any type of forces

Answer 1

Lami's theorem is applicable only for Coplanar and concurrent forces.

Explanation:

• "If three forces acting on a particle are coplanar and concurrent, then each force is proportional to the sine of the angle between the other two, and the constant of proportionality is the same," according to Lami's theorem.
• The Sine rule of triangles is used to derive this theorem.
• Option C is correct.

Answer 2

Lami's theorem is applicable for coplanar and concurrent forces.

Explanation:

• Coplanar forces act on the same plane.
• Concurrent forces are those forces whose lines of action meet at the same point.
• Lami's theorem states that “When three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two forces”.
• Hence, Lami's theorem is applicable only for coplanar and concurrent forces.

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