Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Anonymous asked in Science & MathematicsPhysics · 1 decade ago

can anyone help me with this physics problem?

i am having a lot of trouble with this type of problem. thanks to anyone who is able to help. i will choose Best Answer.

Calculate the ratio of the magnitude of the gravitational force between a 3.200- kg mass on the surface of the earth due to the sun to that due to the moon. The mass of the sun is 1.99e+30kg and the distance from the center of the sun to the surface of the earth is 1.50e+08km

can anyone show me the steps and correct answer?

1 Answer

  • 1 decade ago
    Favorite Answer

    Let m = mass of the object

    Ms = sun's mass

    Mm = moon's mass

    rs = distance of the mass from the sun

    rm = distance of the mass from the moon

    Fs = force by the sun,

    Fm = force by the moon

    Fs = G Ms m/rs^2

    Fm = G Mm m/rm^2

    Fs/Fm = (Ms/Mm) * (rm/rs)^2

    Putting Ms = 1.99 * 10^30 kg, Mm = 7.35 * 10^22 kg

    rs = 1.50 * 10^8 km, rm = 4.07 * 10^5 km,

    Fs/Fm = 199.33

    Ans: 199.33 : 1

    It is approximately 200:1

    (Does the question give the value of moon's mass and the distance of moon's center from Earth's surface?)

Still have questions? Get your answers by asking now.