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physics

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A satellite is in circular orbit above the Earth at an altitude of 2000 km. What is the orbital speed of the satellite? what is the equation i need to use

  • physics - ,

    GM/(Re +h)^2 = V^2/(Re + h)
    or
    G M = V^2*(Re + h)

    Solve for V

    G = universal constant of gravity
    Re = Earth radius = 6370 km
    h = 2000 km
    M = Earth's mass

  • physics - ,

    I did that and I am still getting the wrong answers, do I have to convert anything?

  • physics - ,

    Re and h should be in meters if G is in N*m^2/kg^2

    M must be in kg. Are you sure you used the correct values for G and M?

    You will get the answer in m/s if you do it right.

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