PPT Slide

Gravity

Gravity is attractive

The universal gravitational constant

G defines the strength of

the coupling between

m1 and m2; G=6.67 10-11 Nm2/kg2

r is the distance between 1 and 2

Gravity is a fundamental attractive force that

arises between any two objects with mass

All the usual

“A on B” business

is important. “r-hat”

points from 1 to 2.

The minus sign out

front flips it around.