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Variation in g with Height

Let acceleration due to the gravity at a height h is g. Hence,
 
 46565.png
 
(g is acceleration due to the gravity at Earth surface)
 
46558.png  [as r R + h]
 
47176.png
Fig. 3

 

Important Points
  • As we go above the surface of theEarth, the value of g decreases because gā€™ āˆ1/r2.
  • If h << R, i.e., height is negligible in comparison to the radius, then
     
    47160.png47154.png
     
    [as h << R]




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