Gravitational field of a point mass

Need to know

What you need to know

• Force ($F$) is directly proportional to the product of masses ($m_1m_2$).
• Force ($F$) is inversely proportional to the square of the distance ($r^2$).
• $G$ is the universal gravitational constant ($6.67 \times 10^{-11} \text{ N m}^2 \text{kg}^{-2}$).
• The force is always attractive.

Explanation

Gravitational field of a point mass

1. Force ($F$) is directly proportional to the product of masses ($m_1m_2$).
2. Force ($F$) is inversely proportional to the square of the distance ($r^2$).
3. $G$ is the universal gravitational constant ($6.67 \times 10^{-11} \text{ N m}^2 \text{kg}^{-2}$).
4. The force is always attractive.