Grade 12th PassMechanics
How does the shape of earth affect the value of “g” ?
How does the shape of earth affect the value of “g” ?
2 Answers
Shreya gupta
An earth has a geoid shape.It is flattenedAt the poles nd bulges out at the equator.The equitorial radius is 21 km greater than at the pole.g=GM/R^2gravity of earth(ge) = GMe/(Radius of earth )^2ge is inversely proportional to the square of the radius of the earthAs the radius increases the g decreasesR equitorial > R poleg pole > g equitorial
Arun
Approved Tutor Answer8 Years agoas it is considered that the earths shape is oval, the distance from the centre is varied.As we know that the gravity is the pull by the earth`s centre, it varies as the distance from the centre varies and thus the shape of earth makes gravity vary.
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