Why does a piece of cork released under water bounce back?
Why does a piece of cork released under water bounce back?
Ans: – There works an upward thrust on the cork when the water is released. So as a result of this forces the cork is released.
Hold a mug full of water inside a bucket filled with water. Now lift it above the surface of water. Why do you feel it is heavier now?
Ans: – When we lift any mug filled with the water above the surface of water then we feel heavy because of the acceleration due to gravity as the acceleration due to gravity is decreasing when height increased.
What do you mean by buoyant force?
Ans: – If we placed an object inside a water mug or any biker like substance then we can see that the object which is immersed in the pot is felt a force by water this force is known as buoyant force.
Does the buoyant force act on a body when it is kept in vacuum?
Ans: – The buoyant force worked only when any object is placed in water or in liquid.
State two applications of Archimedes’ principle.
Ans: – The submarine is placed in see by applying Archimedes principal and the lactomer also works in that principal.
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