Advertisements
Advertisements
Question
What is meant by the term buoyancy?
Advertisements
Solution
The property of a liquid to exert an upward force on a body immersed in it is called buoyancy.
APPEARS IN
RELATED QUESTIONS
The density of aluminium is 2.7 g cm-3 and that of brass 8.4 g cm’3. The correct statement is
Explain why a gas bubble released at the bottom of a lake grows in size as it rises to the surface of the lake.
The area of base of a cylindrical vessel is 300 cm2. Water (density= 1000 kg m-3) is poured into it up to a depth of 6 cm. Calculate : (a) the pressure and (b) the thrust of water on the base. (g = 10m s-2.
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)
Prove that the loss in weight of a body when immersed wholly or partially in a liquid is equal to the buoyant force (or upthrust) and this loss is because of the difference in pressure exerted by liquid on the upper and lower surfaces of the submerged part of body.
The mass of a block made of certain material is 13.5 kg and its volume is 15 × 10-3 m3.
(a) Calculate upthrust on the block if it is held fully immersed in water.
(b) Will the block float or sink in water when released? Give a reason for your answer.
(c) What will be the upthrust on block while floating?
Take density of water = 1000 kg m-3.
A body is held inside water contained in a vessel by tying it with a thread to the base of the vessel. Name the three forces that keep the body in equilibrium, and state the direction in which each force acts.
Define atmospheric pressure diving suits. Does a diving suit create buoyancy?
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.
