Which of the following is the correct expression for gravitational acc – McqOptions

MCQOPTIONS

1.	Which of the following is the correct expression for gravitational acceleration (g) at a height h, given g_o refers to gravitational acceleration on the earth s surface and R_o refers to effective radius of earth?
A.	g=g<sub>o</sub>[R<sub>o</sub>/(R<sub>o</sub>+h)]<sup>2</sup>
B.	g=g<sub>o</sub>[R<sub>o</sub>/(R<sub>o</sub>-h)]<sup>2</sup>
C.	g=g<sub>o</sub>[(R<sub>o</sub>+h)/2R<sub>o</sub>]<sup>2</sup>
D.	g=g<sub>o</sub>[(R<sub>o</sub>-h)/2R<sub>o</sub>]<sup>2</sup>
Answer» B. g=g<sub>o</sub>[R<sub>o</sub>/(R<sub>o</sub>-h)]<sup>2</sup>

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