Figure shows a man of mass 60 kg standing on a light weighting machine kept in a box of mass 30 kg. The box is haning from a pulley fixed to the ceiling through a light rope, the other end of which is held by the man himswelf. If the man manages to keepthe box at rest, what is the weight shown by the man manages to keep the box at rest, what is the weight shown by the machine? What force should he exert on the rope to get his correct weight on the machine?