Through various experiments, the video illustrates that buoyant force is equal to the weight of the water displaced by an object. Keywords water, surface tension, pressure, buoyancy, experiments ...

First, we need to know a little about buoyancy. If the buoyant force of a fluid is greater than the downward force (its mass times the gravitational field strength) of an object placed within it ...

It is because of the density of the gas inside and outside of the balloon. Buoyancy is an upward force in a fluid (any flowing substance, including air) exerted on all bodies within it.

Applying the laws of physics to observations of our atmosphere ... This generates an upward (buoyant) force on the air, as it is lighter than an equal volume of unheated air.

As a bubble grows, it is pulled upwards and stretched by buoyant forces. Surface tension acts ... unified description of relatively simple physics behind a wide range of pinch-off phenomena.