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प्रश्न
How does the density ρs of a substance determine whether a solid piece of that substance will float or sink in a given liquid ρL?
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उत्तर
The body will float if its density is less than or equal to the density of the liquid ρs ≤ ρL.
The body will sink if its density is greater than the density of the liquid ρs > ρL.
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संबंधित प्रश्न
A body of density ρ sinks in a liquid of density ρL. The densities ρ and ρL are related as :
A body of volume 100 cm3 weighs 5 kgf in air. It is completely immersed in a liquid of density 1.8 × 103 kg m-3. Find:
- The upthrust due to liquid and
- The weight of the body in liquid.
A piece of brass weighs 175 gf in air and 150 gf when fully submerged in water. The density of water is 1.0 g cm-3.
(i) What is the volume of the brass piece? (ii) Why does the brass piece weigh less in water?
A loaded cargo ship sails from sea water to river water. State and Explain your observations.
A cork cut in the form of a cylinder floats in alcohol of density 0.8 gcm-3, such that 3/4 of its length is outside alcohol. If the total length of the cylinder is 35 cm and area of cross-section 25 cm2, calculate:
(1) density of cork
(2) wt. of cork
(3) extra force required to submerge it in alcohol
A body of mass ‘m’ is floating in a liquid of density ‘p’
what is the loss of weight of body?
Select the correct option:
With the increase in the density of the fluid, the upthrust experienced by a body immersed in it:
Select the correct option:
A body has density 9.6 gcm -3. Its density in SI system is:
A body weighs 300 gf in air and 280 gf when completely immersed in water. Calculate:
(i) The loss in weight of the body,
(ii) The upthrust on the body.
