Correct option is C
The correct answer is (c) Buoyant force.
· When objects are immersed in a fluid, they experience an upward force called the buoyant force.
· This force is due to the displacement of fluid caused by the object and is governed by Archimedes' principle.
Explanation:
· Buoyant Force: The upward force exerted by a fluid on an object submerged in it. This force depends on the density of the fluid, the volume of the object submerged, and gravitational acceleration.
Formula:
Fb=ρ⋅V⋅g
Where:
· F: Buoyant force
· ρ: Density of the fluid
· V: Volume of the displaced fluid
· g: Gravitational acceleration
then the excess force required to take it away from the surface is:
The pressure inside the bubble equals at a
below the free surface of water in a container.
is: