In static equilibrium on a rigid body experiment Q1. Write down the 2 conditions that must be met for a rigid body to be in equilibrium and comment on them. Is there a third condition? Justify your answer.

a) Yes, there's a third condition.
b) No, there's no third condition.
c) Yes, there's a third condition, but it's irrelevant in static equilibrium.
d) No, there's no third condition, only two are necessary.