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प्रश्न
The diagram given below show a body floating in three different liquids. A, B and C at different levels.
(a) In which liquid does the body experience the greatest buoyant force?
(b) Which liquid has the least density?
(c) Which liquid has the highest density?
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उत्तर
a) Buoyant force is same in each case as the wt. of the body is same in each case and Buoyant force is equal to the weight of the liquid displaced by the immersed part of the body which balances the wt. of body.
(b) The liquid A has the least density as body immerses the maximum.
(c) Liquid C has the highest density as the body immerses the least.
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संबंधित प्रश्न
What is meant by the term ‘buoyancy’ ?
A body while floating sinks deeper in a liquid of low density than in a liquid of high density.
Distinguish between density and relative density.
Differentiate between thrust and pressure.
A hammer exerts a force of 1.5 N on each of the two nails A and B. The area of cross section of tip of nail A is 2 mm2 while that of nail B is 6 mm2. Calculate pressure on each nail in pascal.
The pressure of water on the ground floor is 40,000 Pa and on the first floor is 10,000 Pa. Find the height of the first floor. (Take : density of water = 1000 kg m-3, g = 10 m s-2)
You are provided with a hollow iron ball A of volume 15 cm3 and mass 12 g and a solid iron ball B of mass 12 g. Both are placed on the surface of water contained in a large tub.
- Find upthrust on each ball.
- Which ball will sink? Give a reason for your answer (Density of iron = 8.0 g cm-3)
Is pressure a vector quantity?
Higher Order Thinking Skill.
How does a fish manage to rise up and move down in water?
In a fluid, buoyant force exists because the pressure at the ______ of an object is greater than the pressure at the top.
