Derive the eqation of g=G×M÷R

1.	Derive the eqation of g=G×M÷R
Answer» We have 1.) F=G Mm÷d^2 ( d^2 means d ki power 2)2.) F= m×g from these equations mg = G Mm÷d^2 g= G Mm÷ d^2 ×m g= G M ÷d^2 ( m÷m= 1)so finally g= G M ÷d^2

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