A family sits on an 8 meter long see-saw. The daughter, massing 20 kilograms, sits at the left end of the see-saw, and the father, massing 80 kilograms, sits at the middle of the right portion of the see-saw. Where must the mother, massing 60 kilograms, sit in order to make the see-saw in static equilibrium and level with the ground?

W) 1 meter left of the pivot

X) 1 meter right of the pivot

Y) 4/3 meter left of the pivot

Z) 4/3 meter right of the pivot
Y) 4/3 METER LEFT OF THE PIVOT