PPT Slide

If you are outside a

massive sphere, it acts

like a point whose mass

is concentrated at the

center

The gravitational force between you and the earth is your weight.

Thus your weight is not constant as a function of height!

Acceleration due to gravity, g, depends on how high you are!

This is g(r) it depends

on the mass of the earth

and how high you are.

Near the surface g=9.8m/s2

You in space