In physics, 'g' represents the acceleration due to gravity at a specific location on Earth, around 9.8 m/s². Capital 'G' is the universal gravitational constant, a fixed value used in Newton's law of universal gravitation. My own garden teaches me this distinction every day: the constant 'G' is like the unchanging nature of the red soil here, while the local 'g' is like my jasmine, which I must coax differently through the seasons to get it to thrive. So, one is a universal number, and the other is a local condition you must work with practically.
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