The Moon's mass is 7.34✕10^22 kg, and it is 3.8✕10^8 m away from Earth. Earth's mass is 5.97✕10^24 kg. How would you calculate the gravitational force of attraction between Earth and the Moon? What is Earth's gravitational field at the Moon?

1 Answer
Oct 28, 2015

2.025*10^(20) ,0.002759

Explanation:

a)F=(G(m1)(m2))/(r^(2))
F=(6.67300 × 10^(-11))(7.34 * 10^(22) kg)(5.97 * 10^(24) kg)/(3.8 * 10^(8) m)^2=2.025*10^(20)

b) The field is just G(m)/r^2
(6.67300 * 10^(-11))(5.97 * 10^(24) kg)/(3.8 * 10^(8) m)^2=0.002759