Lectures on Physics has been derived from Benjamin Crowell's Light and Matter series of free introductory textbooks on physics. See the editorial for more information.... 
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Gravitational field of the earthQuestion: What is the magnitude of the earth's gravitational field, in terms of its mass, M, and the distance r from its center? Solution: Substituting F = GMm_{t} / r^{2} into the definition of the gravitational field, we find g = GM / r^{2}


Home Electricity Fields of Force Examples Gravitational field of the earth 