By observing that the centripetal acceleration of the Moon around the Earth is ac = 2.74 × 10-3 m/s2, what is the gravitatonal constant G, in cubic meters per kilogram per square second? Assume the Earth has a mass of ME = 5.97 × 1024 kg, and the mean distance between the centers of the Earth and Moon is rm = 3.81 × 108 m.

Respuesta :

Answer:

[tex]G=6.66\times 10^{-11}\ m^3kg^{-1}s^{-2}[/tex]

Explanation:

The centripetal acceleration of the Moon around the Earth is, [tex]a_c=2.74\times 10^{-3}\ m/s^2[/tex]

Mass of the Earth, [tex]M=5.97\times 10^{24}\ kg[/tex]

The mean distance between the centers of the Earth and Moon, [tex]r=3.81\times 10^{8}\ m[/tex]

The centripetal acceleration of the Moon around the Earth is given by the formula as :

[tex]a=\dfrac{GM}{r^2}[/tex]

[tex]G=\dfrac{ar^2}{M}[/tex]

[tex]G=\dfrac{2.74\times 10^{-3}\times (3.81\times 10^{8})^2}{5.97\times 10^{24}}[/tex]

[tex]G=6.66\times 10^{-11}\ m^3kg^{-1}s^{-2}[/tex]

Hence, this is the required solution.