New answers tagged vector-fields
First, please answer this simple question: How to write a constant (in all space) vector in spherical coordinates?
As far as I understand this problem, "GPE seems to exist only when I introduce the ball into the gravitational field" is a correct statement. As You said "You introduce the ball", so first You do the work that is converted to GPE and then GPE does work in accelerating the ball. I don't think there is a way in which a ball can appear somewhere within the ...
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