Physics

Problem

Calculate the magnitude of the gravitational force between Earth and Moon, given: • Mass of Earth

= 6.0\times10^{24}\,\text{kg}

• Mass of Moon

= 7.4\times10^{22}\,\text{kg}

• Distance between their centres

= 3.84\times10^{8}\,\text{m}

Take

G = 6.67\times10^{-11}\,\text{N\,m}^2\text{/kg}^2

. a)

2.0\times10^{21}\,\text{N}

7.7\times10^{20}\,\text{N}

2.0\times10^{20}\,\text{N}

2.0\times10^{19}\,\text{N}