Figure shows a man of mass 48 kg standing on a light weighing machine kept in a box of mass 30 kg. The box is hanging from a pulley fixed to the ceiling through a light rope, the other end of which is held by the man himself. If the man manages to keep the box at rest, the weight shown by the machine is
____ kg.

Question

Figure shows a man of mass 48 kg standing on a light weighing machine kept in a box of mass 30 kg. The box is hanging from a pulley fixed to the ceiling through a light rope, the other end of which is held by the man himself. If the man manages to keep the box at rest, the weight shown by the machine is

____ kg.

TestHub · Accepted Answer

Man plus box supported by two rope tensions: 2 T = ( 48 + 30 ) g , so T = 390 N For the man: N + T = 48 g N = 480 − 390 = 90 N, so the machine reads 9 kg

Physics - NLM Question with Solution | TestHub

Doubts & Discussion