According to archimedes' principle, what condition has to be met for an object to float?
1.buoyant force has to be less than the weight of the object
2.buoyant force has to equal the weight of the object
3.buoyant force has to be greater than the weight of the object
4.buoyant force has to equal exactly half the weight of the object

Option C, buoyant force has to be greater than the weight of the object

Explanation:

As per Archimedes' Principle, buoyant force is the force exerted by water and it acts in the upward direction and is equal to the weight water displaced by the object immersed in water. Hence, there arises three situations -  

a)When both the buoyant force and weight of the displaced liquid is equal, the object remains in stable condition and thus it remains submerged.

b)When weight of water displaced by the immersed object becomes greater than the buoyancy force exerted by water, the object sinks down.  

c)When weight of water displaced by the immersed object becomes less than the buoyancy force exerted by water, the object rise up and floats.

Hence , Option C is correct.

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