Question

A light spring balance hangs from the hook of the other light spring balance
and a block of mass M kg hangs from the former one. Then the true statement
about the scale reading is
Both the scales read M/2 kg each
Both the scales read M kg each
The scale of the lower one reads Mke and of the upper one zero
The reading of the two scales can be anything but the sum of the reading will
be M kg​

Answer 1

Answer:

The arrangement is shown in figure Now, draw the tree body diagram of the spring balances and block. For equilibrium of block, T1 = Mg where, T1 = Reading of S2 For equilibrium of S2, T2 = T3 Hence, T1 = T2 = Mg So, both scales read M kg.Read more on Sarthaks.com - https://www.sarthaks.com/195747/light-spring-balance-hangs-from-the-hook-the-other-light-spring-balance-and-block-mass-hangs.

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