Advertisements
Advertisements
Question
What is the centre of buoyancy? State its position for a floating body with respect to the centre of gravity of the body.
Solution
Centre of buoyancy: It is the point through which the resultant of the buoyancy forces on a submerged body act; it coincides with the centre of gravity of the displaced liquid, if the body is completely immersed.
For a floating body with its part submerged in the liquid, the centre of buoyancy is at the centre of gravity of the submerged part of the body and it lies vertically below the centre of gravity of the entire body.
APPEARS IN
RELATED QUESTIONS
A body experiences the same buoyant force when it floats or sinks in water.
A body sinks in a liquid A but floats in a liquid B. The density of liquid A is ....... than the density of liquid B.
The relative density of alcohol is 0.8. Its density is
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?
State the laws of liquid pressure.
Complete the following sentence :
A piece of wood is held under water. The upthrust on it will be ___________ the weight of the wood piece.
Figure shows the same block of wood floating in three different liquids A, B and C of densities ρ1, ρ2 and ρ3 respectively. Which of the liquid has the highest density? Give a reason for your answer.
Select the correct option.
The unit Nm2 is the unit of
How is thrust different from pressure?
Write about buoyant force.
