if the fan rotates at constant speed ,then it's angular velocity is constant so net torque must be zero
first condition for equilibrium is that the a body is satisfy with first condition if the resultant of all the forces acting on it is zero let n numbers of the forces F1, F2,F3,.........., Fn are acting on a body such that sigmaF=0 a book lying on a table or picture hanging on the wall are at rest and thus satisfy with first condition of equilibrium a paratrooper coming with terminal velocity also satisfies first condition of equilibrium
It is the data that you use to create a condition. It will determine what data will be displayed.
It the set of all points which satisfy some given condition.
because according my point of view it uses in c where we use many same repeating (cses1,case2,case3 etc) conditions just in loops where condition will satisfy ,to print out the (case) condition,this is your case is satisfy .