# How do you derive #g=(Gm)/r^2# and #V=-(Gm)/r#?

##### 1 Answer

Jan 28, 2018

Here you go....

#### Explanation:

Weight of an object on Earth = Gravitational force exerted on an object by the Earth.

Let us consider a body having mass "m".

where,

g=acceleration due to gravity,

G=Gravitational constant,

M=Mass of the Earth,

and R=radius of the Earth.

Weight of the body (on Earth)=

mass

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