Figure shows a man of mass 50kg standing on a light weighing machine kept in a box of mass 30kg.
Channel: Doubtnut
Date: 2020-01-19

Figure shows a man of mass 50kg standing on a light weighing machine kept in a box of mass 30kg. The box is hanging from a pulley fixed to the ceilling through a light rope, the other end of which is held by the man himsellf. If the man manages to keep the box at rest, the weight shown by the machine is.