Context: A video of an elephant being rescued in Jharkhand went viral recently, winning officials of the state forest department praise online. They applied the Archimedes Principle, or the ‘upward buoyant force theory’, to bring the elephant out of the well.
What is Archimedes’ Principal? How it is being used to save the Elephant?
In physics, the Archimedes Principle refers to the law of buoyancy (the ability or tendency of something to float in water or other fluids). According to the principle, when an object is completely or partially submerged in a fluid, whether gas or liquid, it is acted upon by an upward force (buoyancy) equal to the weight of the fluid it has displaced.
The force acting downward on the object is the weight of the object. The upward force is the one given by the Archimedes Principle. The difference between the two forces is the net force acting on the object.
Now, if the buoyant force is more than the weight, the object rises and if it is less, the object sinks. If the net force is zero, the object remains in place, and neither rises nor sinks.
In the case of the elephant rescued in Jharkhand, the forest officials pumped water into the well so that the elephant could float to the surface.
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