Why a balloon filled with air always tries to rise upward when pressed inside water??
Answers
Answer:
Two inter-related reasons are there.
1) Buoyancy
2) Difference in density
Explanation:
Buoyancy is the act of water giving an upward force to any object. The water gives the air-filled balloon an upward force. The balloon also gives a small amount of force downwards in the water, but the buoyancy of water is more than the force exerted by the balloon. So, it tends to go up and float even if we press it down.
Another reason is that, as the balloon is filled with air, it has less density than water. Thus, it goes up and floats on the water even if we press it down.
By combining both the reasons, we get a simple answer:
*The density of the air-filled balloon is less than the density of water. So, the water creates an upward force on the balloon (buoyancy) which makes the balloon to go up and float on the water even if we try to press it down.*
Hope this helps. Thanks!
Explanation:
this happens because there is a buoyant force acting on the ball. moreover, the ball (plastic) tries to float on the surface of the water.