How does the potential energy of the rising balloon increase?
August 15, 2020 | Education|
As it rises, the ball “swaps places” with the air displaced by it. The mass of this air is greater than the mass of the ball (otherwise the ball would not rise). The potential energy of the sphere increases due to a decrease in the potential energy of the surrounding air, while the total potential energy of the Earth – sphere – air system decreases.
Answer: by reducing the potential energy of the surrounding air.
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