Question

Which of the following states that, "If a body is in equilibrium, under the action of three concurrent forces, each force is proportional to the sine of the angle between the other two forces"?

• A. Parallelogram law of forces
• B. Varignon's theorem
• C. Transmissibility of forces
• D. Lami's theorem

Answer 1

Answer:

D. Lami's theorem

Lami's theorem

If a body is in equilibrium, under the action of three concurrent forces, each force is proportional to the sine of the angle between the other two forces