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 stateme - Physics MCQ AIEEE 2003 2026 | ExamTest.live

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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 scale reading is:

A $both the scales read M kg each$
B $the scale of the lower one reads M kg and of upper one zero$
C $the reading of the two scales can be anything but sum of the reading will be M kg$
D $both the scales read M /2 kg$

Solution & Step-by-step Explanation

Tension is uniform throughout the light string/balance system. The lower balance experiences a pull of M g from the block and transmits the same M g to the upper balance. Thus, both read M kg .

Try it yourself before checking the explanation above.

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 scale reading is:

both the scales read M kg each

the scale of the lower one reads M kg and of upper one zero

the reading of the two scales can be anything but sum of the reading will be M kg

both the scales read M /2 kg

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