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प्रश्न
When a piece of wood is suspended from the hook of a spring balance, it reads 70 gf. The wood is now lowered into water. What reading do you expect on the scale of spring balance?
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उत्तर
The reading on the spring balance will be zero because wood floats on water and while floating the apparent weight = 0.
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संबंधित प्रश्न
State the principle of floatation.
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Give reasons.
Hint: Ice contracts on melting.
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Where do we use lactometers?
