David Sang and Graham Jones Solutions for Chapter: Gravitational Fields, Exercise 2: Questions

Calculate the gravitational force of attraction between two objects separated by a distance of $1.0\mathrm{cm}$ and each having a mass of $100 \mathrm{g}$.

Calculate the gravitational force of attraction between two asteroids separated by a distance of $4.0\times {10}^9\mathrm{m}$ and each having a mass of $5.0\times {10}^{10}\mathrm{kg}$.

Calculate the gravitational force of attraction between a satellite of mass $1.4 \mathrm{x}{10}^4 \mathrm{kg}$ orbiting the Earth at a distance of $6800 \mathrm{km}$ from the Earth's centre. (The mass of the Earth is$6.0\times {10}^{24}\mathrm{kg}$).

Estimate the gravitational force of attraction between two people sitting side by side on a park bench. How does this force compare with the gravitational force exerted on each of them by the Earth (in other words, their weight)?