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schroedinger4
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gravitational field strength problem-urgent help needed
Moon has a radius of 1740km, Mass of 7.35 x10^ 22kg, grav field strength of moon= 1.62Nkg^-1, distance from Earth to Moon is 380000km G=6.67x10^-11Nm^2kg^-2
The Moon's gravitational pull on the Earth causes the ocean tides. Show that the gravitational pull of the Moon on the Earth's oceans is approximately 3 millionths of the gravitational pull of the Earth on its oceans.
g = GM / r^2 g = gs R^2 / r^2 where R= radius of planet, r = distance
g = gs R^2 / r^2
1.62 = gs 1740x10^3 / 380000 x 10^3
(1.62 x 380000x10^3) / 1740 x 10^3 = gs
1/3000000= 3 x10^-6
3 x10^-6 x 9.81 = gs ?
Please help!
Homework Statement
Moon has a radius of 1740km, Mass of 7.35 x10^ 22kg, grav field strength of moon= 1.62Nkg^-1, distance from Earth to Moon is 380000km G=6.67x10^-11Nm^2kg^-2
The Moon's gravitational pull on the Earth causes the ocean tides. Show that the gravitational pull of the Moon on the Earth's oceans is approximately 3 millionths of the gravitational pull of the Earth on its oceans.
Homework Equations
g = GM / r^2 g = gs R^2 / r^2 where R= radius of planet, r = distance
The Attempt at a Solution
g = gs R^2 / r^2
1.62 = gs 1740x10^3 / 380000 x 10^3
(1.62 x 380000x10^3) / 1740 x 10^3 = gs
1/3000000= 3 x10^-6
3 x10^-6 x 9.81 = gs ?
Please help!
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