physics

posted by .

Find the distance (measured in earth radii, RE) from the center of the earth to a point outside the earth where the acceleration of gravity due to the earth is exactly one ninth of its value on the surface of the earth.

  • physics -

    F=k/r^2 Since F is 1/9, it is apparent that r must be 3re

  • physics -

    g(r) = constant *1/r^2
    at r = 1 , g(1) = g
    so
    g(r) = g/r^2
    g(r) = g/3^2 if r = 3

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Astro

    What is the distance in meters from the Earth's center to a point out-side the Earth where the gravitational acceleration due to the Earth is 1/20 of its value at the Earth's surface?
  2. physics

    What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/22 of its value at the Earth's surface?
  3. colllege physics

    What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/45 of its value at the Earth's surface?
  4. physics

    What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/45 of its value at the Earth's surface?
  5. phy

    What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/12 of its value at the Earth's surface?
  6. Physics

    What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/20 of its value at the Earth's surface?
  7. precalculus

    The acceleration acting on a falling object due to gravity varies inversely with the square of the object's distance from the center of Earth. At the surface of Earth, where x = 1 Earth radius, the acceleration is y = 9.8 m/s2 1. Use …
  8. physics

    What is the acceleration due to gravity at a distance of 1.2 Earth radii above Earth�s surface?
  9. math

    What is the acceleration due to gravity at a distance of 1.2 Earth radii above Earth�s surface?
  10. Calculus Physics

    Imagine a spaceship on its way to the moon from the earth. Find the point, as measured from the center of the earth, where the force of gravity due to the earth is balanced exactly by the gravity of the moon. This point lies on a line …

More Similar Questions