Question

what is buoyancy and buoyant force

Answer 1

HEY.....

BYOYANCY IS THE UPWARD FORCE EXERTED BY AN OBJECT IN LIQUIDS.

WHEN AN OBEJECT IS IMMERSED IN LIQUIDS THEN IT FACES BUOYANCY.

IF THE DENSITY OF THE OBJECT IS MORE THAN THE DENSITY OF WATER..THEN IT WILL SINK..

AND

IF THE DENSITY OF OBJECT IS LESS THAN DENSITY OF WATER THEN IT WILL FLOAT.

BUOYANCY IS ALSO KNOWN AS BUOYANT FORCE...

Answer 2

The concept of buoyancy helps explain common phenomena, such as why certain objects float and why solid objects seem to weigh less in water than on land. If you submerge a solid object into a fluid, the object will experience two different pressures at the top and the bottom of its shape. This is due to the fact that pressure is directly related to the depth of the object as so the bottom surface of any object in a given fluid will experience a higher force than the top surface of that same object. Therefore, there will be a difference in pressure that will create a force that will point vertically upward and this force is known as the force of buoyancy. Note that the buoyant force opposes the force of gravity and if the two forces have the same exact magnitude, they will cancel one another out and the object will remain in static equilibrium within the fluid. If we derive the equation for the force of buoyancy, we see that the magnitude of the buoyant force is equal to the product of the mass of the fluid that is displaced by the object and the gravitational constant g.