Which one of the following sets of conditions must be satisfied for a particle to…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Which one of the following sets of conditions must be satisfied for a particle to remain in static equilibrium under the action of concurrent forces in a plane? (a) ∑τ=0\sum \tau = 0 (b) ∑Fx=mg  and  ∑Fy=0\sum F_x = mg \;\text{and}\; \sum F_y = 0 (c) ∑Fx=0  and  ∑Fy=0\sum F_x = 0 \;\text{and}\; \sum F_y = 0 (d) ∑Fx=ma  and  ∑Fy=ma\sum F_x = ma \;\text{and}\; \sum F_y = ma

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