The Gravitational Force and the Gravitational Field (HSC SSCE Physics): Flashcards

Every mass attracts every other mass

$F = \frac{GMm}{r^2}$

$6.67 \times 10^{-11}$ N kg$^{-2}$ m$^2$

Always attractive

Inverse square law

$g = \frac{F}{m}$ (force per unit mass)

N kg$^{-1}$ or m s$^{-2}$

$9.8$ m s$^{-2}$ or $9.8$ N kg$^{-1}$

Always point toward the mass

$F_{A \text{ on } B} = -F_{B \text{ on } A}$