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प्रश्न
A body of weight W is floating in a liquid. Its apparent weight will be
पर्याय
Equal to W
Less than W
Greater than W
Zero
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उत्तर
A body of weight W is floating in a liquid. Its apparent weight will be Zero
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संबंधित प्रश्न
State the principle of floatation.
Why is the floating ice less submerged in brine than in water?
An iron nail sinks in the water while an iron ship floats on water. Explain the reason.
A piece of ice floating in a glass of water melts, but the level of water in the glass does not change.
Give reasons.
Hint: Ice contracts on melting.
Explain the following :
Icebergs floating in sea are dangerous for ships.
A weather forecasting plastic balloon of volume 15 m3 contains hydrogen of density 0.09 kg m-3. The volume of equipment carried by the balloon is negligible compared to its own volume. The mass of an empty balloon alone is 7.15 kg. The balloon is floating in air of density of 1.3 kg m-3. Calculate:
(i) The mass of hydrogen in the balloon,
(ii) The mass of hydrogen and balloon,
(iii) The total mass of hydrogen, balloon and equipment if the mass of equipment is x kg,
(iv) The mass of air displaced by balloon and
(v) The mass of equipment using the law of floatation.
What fraction of metal of density 3400 kgm-3 will be above the surface of mercury of density 13600 kgm-3, while floating in mercury?
A block of wood of volume 25 cm3 floats in water with 20 cm3 of its volume immersed in water.
Calculate:
(1) density of wood
(2) the weight of block of wood.
State the principle of floatation. What can you say about the average density of a ship floating on water?
Assertion: To float, body must displace liquid whose weight is equal to the actual weight.
Reason: The body will experience no net downward force in that case.
