Calculate the acceleration due to gravity at an altitude of above Earth’s surface

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Calculate the acceleration due to gravity at an altitude of

400\,\text{km}

above Earth’s surface. Take

g = 9.8\,\text{m s}^{-2}

and

R_{\rm E}=6.4\times10^{6}\,\text{m}