A uniform horizontal beam has a weight of 60 N acting at its centre. The pivot is 0.20 m to the left of the centre. A load of 90 N hangs 0.40 m to the left of the pivot. At what distance to the right of the pivot must a 40 N load hang to balance the beam?
0.30 m0.30\ \mathrm{m}0.30 m
0.90 m0.90\ \mathrm{m}0.90 m
0.60 m0.60\ \mathrm{m}0.60 m
1.20 m1.20\ \mathrm{m}1.20 m