Which of the following is the variation of acceleration due to gravity at a height “h” above the earth’s surface? Let “R” be the radius of the earth and “M1” the mass of earth.(a) g = (G*M1)/R^2(b) g = (G*M1)/h^2(c) g = (G*M1)/(R + h)^2(d) g = (G*M1)/(h/R)^2I had been asked this question in unit test.I want to ask this question from Acceleration due to Gravity below and above the Surface of Earth topic in section Gravitation of Physics – Class 11

Which of the following is the variation of acceleration due to gravity

1.	Which of the following is the variation of acceleration due to gravity at a height “h” above the earth’s surface? Let “R” be the radius of the earth and “M1” the mass of earth.(a) g = (GM1)/R^2(b) g = (GM1)/h^2(c) g = (GM1)/(R + h)^2(d) g = (GM1)/(h/R)^2I had been asked this question in unit test.I want to ask this question from Acceleration due to Gravity below and above the Surface of Earth topic in section Gravitation of Physics – Class 11
Answer» Correct option is (c) g = (GM1)/(R + h)^2 For explanation: If “r” is the distance between the centre of the earth and the OBJECT at a HEIGHT “h” above the earth’s surface, then; R = R + h And; g = (GM1)/r^2 = (G*M1)/(R + h)^2.

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