Define surface of buoyancy?
Answers
Answer:
Buoyancy is an upward force exerted by a fluid on an immersed object in a gravity field. In fluids, pressure increases with depth; hence, when an object is immersed in a fluid, the pressure exerted on its bottom surface is higher than the pressure exerted on its top surface.
Answer:
What is Buoyancy?
Buoyancy is an upward force exerted by a fluid on an immersed object in a gravity field. In fluids, pressure increases with depth; hence, when an object is immersed in a fluid, the pressure exerted on its bottom surface is higher than the pressure exerted on its top surface.
Buoyant Force
Buoyancy is simply defined as the ability of an object to float in a fluid (liquids and gases). When an object with a mass is submerged in any fluid, an upward force exerted by the fluid is experienced by the object that tends to push the object upwards. This upwards acting force that pushes the immersed body towards the surface of the fluid is termed buoyant force. This buoyant force is due to the pressure differences on the top and bottom surfaces of the immersed object. The object will experience an upwards buoyant force if the object is immersed completely or even partially. An object, when immersed in a fluid, will always feel lighter than it actually is because of the buoyant force, also otherwise known as upthrust. The following are the factors that influence the force of buoyancy.
The density of the fluid involved
The total volume of the fluid displaced
Local acceleration due to gravity (g)
The buoyant force is given by Fb = ρVg
where
Fb = the buoyant force
ρ = the density of the fluid
V = the volume of the displaced fluid
g = the acceleration due to gravity
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