Question

An object in equilibrium has three forces, F₁ of 30 N, F₂ of 50 N, and F₃ of 70 N, acting on it. The magnitude of the resultant of F₁ and F₂ 

(A) 10 N 

(B) 20 N 

(C) 40 N 

(D) 70 N 

(E) 80 N

Answer 1

Correct option (D) 70 N   

For three forces in equilibrium, any one of the forces is equal and opposite to the resultant of the other two forces.