Two forces act on the skew caster. Find: Determine the resultant moment of these forces about point a and about point b. a) Moment about point a = 10 Nm, Moment about point b = 15 Nm b) Moment about point a = 8 Nm, Moment about point b = 12 Nm c) Moment about point a = 14 Nm, Moment about point b = 18 Nm d) Moment about point a = 5 Nm, Moment about point b = 9 Nm