Question 150: Laws of Motion

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

Accepted Answer

Question says, both spring balance are light that means springs are massless.
The Earth pulls the block by a force $$Mg.$$ The block in turn exerts a force $$Mg$$ on the spring of spring balance $${S_1}$$ which therefore shows a reading of $$Mkgf.$$
The spring $${S_1}$$ is massless. Therefore it exerts a force of $$Mg$$ on the spring of spring balance $${S_2}$$ which shows the reading of $$Mkgf.$$

Answer

Both the scales read $$M$$ $$kg$$ each

Answer

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

Answer

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

Answer

Both the scales read $$M/2$$ $$kg$$ each

Laws of Motion

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

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