Change in potentiall energy when a bubble create in water
Answers
Answered by
0
For an air bubble the interface is water only, as such drag is zero. As the bubble is rising there is net upwards force acting on the bubble.
vecF_"net"=vecF_"Buoyancy"-vecF_"Gravity"
It may be seen that Gravitational potential energy increases as the bubble rises, or height h increases as
Also due net upwards force there is upward motion of velocity v and bubble has kinetic energy
KE=1/2mv^2
As the bubble rises, pressure on the bubble decreases, which leads to expansion of bubble and thereby increase of force due to buoyancy. As such kinetic energy increases.
Another energy which is associated with the bubble is its Buoyancy potential energy which is directly proportional to the depth of the bubble. As the bubble rises its depth decreases. Hence Buoyancy potential energy decreases.
As a result of the Law of Conservation of energy:
The increase in Kinetic and Gravitational Potential energies is due to decrease in Buoyancy potential energy of bubble.
vecF_"net"=vecF_"Buoyancy"-vecF_"Gravity"
It may be seen that Gravitational potential energy increases as the bubble rises, or height h increases as
Also due net upwards force there is upward motion of velocity v and bubble has kinetic energy
KE=1/2mv^2
As the bubble rises, pressure on the bubble decreases, which leads to expansion of bubble and thereby increase of force due to buoyancy. As such kinetic energy increases.
Another energy which is associated with the bubble is its Buoyancy potential energy which is directly proportional to the depth of the bubble. As the bubble rises its depth decreases. Hence Buoyancy potential energy decreases.
As a result of the Law of Conservation of energy:
The increase in Kinetic and Gravitational Potential energies is due to decrease in Buoyancy potential energy of bubble.
Similar questions