Forces Between Masses (Grade 11 NSC Matric Physical Sciences): Flashcards

Attractive force between objects due to their mass

$F = G\frac{m_1 m_2}{d^2}$

$6.67 \times 10^{-11}$ N⋅m²⋅kg⁻²

Always attractive

Directly proportional to product of masses ($m_1 m_2$)

Inversely proportional to distance squared ($d^2$)

$9.8$ m⋅s⁻²

Mass cancels in equations; acceleration same for all objects

Mass constant everywhere; weight varies with gravity

$F = mg$