WAEC Physics 2012 Objective — Question 35

Question 35 of 50 from the West African Examinations Council (WAEC) Physics 2012 Objective paper, with the correct answer and a full explanation.

The correct relationship between 'G' and 'g' in gravitational field is given by the equation (where the symbols have their usual meanings)

A. A. g = GM/R
B. B. g = GM/R²Correct
C. C. g = GM/R
D. D. g = GM/R²

Explanation

The gravitational field strength g = GM/R², where G is the universal gravitational constant, M is the mass and R is the distance from the centre of mass.

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