Which of the conditions shows that the particles are in equilibrium state for two forces F1and F2 acting on the body?
F1 = F2
F1 = -F2
F1= 2F2
2F1=F2
If the two forces acting on the particle are equal and apposite, then the particle is said to be in equilibrium state.
The centre of an equilateral triangle is O. Three forces F1,F2 and F3 are appointed along AB, BC and AC respectively. The magnitude of F3 so that the total torque about O should be zero is