Question

O is the centre of an equilateral triangle ABC. F₁,
F₂ and F₃ are three forces acting along the sides
AB, BC and AC as shown here. What should be
the magnitude of F₃, so that the total torque about O is zero?
(a) (F₁ + F₂)/2 (b) 2(F₁ + F₂)
(c) (F₁ + F₂) (d) [F₁ – F₂]

Answer 1

Explanation:

a) (F₁ + F₂)/2

(b) 2(F₁ + F₂)

(c) (F₁ + F₂)

(d) [F₁ – F₂]✔✔

Answer 2

Answer:

(D) [F1 - F2]

is the correct answer