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प्रश्न
A body dipped into a liquid experiences an upthrust. State two factors on which upthrust on the body depends.
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उत्तर
Upthrust on a body depends on the following factors:
(i) Volume of the body submerged in the liquid or fluid.
(ii) Density of liquid or fluid in which the body is submerged.
संबंधित प्रश्न
A body held completely immersed inside a liquid experiences two forces:
(i) F1, the force due to gravity and
(ii) F2, the buoyant force.
Draw a diagram showing the direction of these forces acting on the body and state the condition when the body will float or sink.
The density of copper is 8.83 g cm-3. Express it in kg m-3.
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?
Explain why an iron nail floats on mercury, but it sinks in water.
Hint : Density of iron is less than that of mercury, but more than that of water.
What can you say about the average density of a ship floating on water in relation to the density of water?
Explain the following :
A ship submerges more as it sails from sea water to river water.
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
When a piece of ice floating in water melts, the level of water inside the glass remains same. Explain.
Write the SI units of Density
