Question

When forces F₁ , F₂ , F₃ are acting on a particle of mass m such that F₂ and F₃ are mutually perpendicular, then the particle remains stationary. If the force F₁ is now removed then the acceleration of the particle is

(a) F₁/m 

(b) F₂F₃ /mF₁

(c) (F₂ – F₃ )/m 

(d) F₂ /m.

Answer 1

(a) : F₂ and F₃ have a resultant equivalent to F₁
 Therefore,  Acceleration = F₁/m.