A-Level Physics Specification

OCR A H556

Section 5.4.2: Newton’s law of gravitation

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#5.4.2a

Newton’s law of gravitation;
\(F = -\dfrac{GMm}{r^2} \) for the force between two point masses

#5.4.2b

gravitational field strength \(g = -\dfrac{GM}{r^2} \) for a point mass

#5.4.2c

gravitational field strength is uniform close to the surface of the Earth and numerically equal to the acceleration of free fall.