State two limitations of Lami’s theorem.

State two limitations of Lami’s theorem.
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Answer :

1. The theorem is applicable only if the body is in equilibrium. 2. The theorem is not applicable for parallel or non-concurrent force system. 3. The theorem is not applicable for more or less than three concurrent forces. 4. The theorem is not applicable for non-coplanar forces. 
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The statement ---- if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two ---- is known as a.Law of polygon of forces b.D'Alembert's principle c.Newtons law of forces d.Lami's theorem e.Law of triangle of forces

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Last Answer : d. Lami's theorem

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Last Answer : Answer: Option D

The statement --- if forces acting on a point can be represented in magnitude and direction by the sides of a polygon taken in order then their resultant will be represented in magnitude and direction by the closing side of the polygon taken in opposite order ---- is known as a.Law of triangle of forces b.Newton's law of forces c.Law of polygon of forces d.D'Alembert's rule e.Lami's theorem

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According to Lami's theorem?

Last Answer : According to Lami's theorem if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two.

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