Post a New Question


posted by .

A satellite has a mass of 6146 kg and is in a circular orbit 4.57 × 105 m above the surface of a planet. The period of the orbit is 1.6 hours. The radius of the planet is 4.44 × 106 m. What would be the true weight of the satellite if it were at rest on the planet’s surface?

What do I use to find the mass of the unknown planet?

  • Physics -

    The final equation to use is: W=(GmM)/r^2
    m=mass of satelite
    M=mass of planet

    What is the equation to find the mass of the planet?

  • Physics -

    The weight of the planet in orbit is
    W = M V^2/R
    where R = 4.57*10^5 m and V is the velocity at that altitude,
    V = 2 pi R/(period).
    Calculate W.

    The weight W' of the satellite at the planet's surface is

    W'/W = (4.44*10^6/4.57*10^5)^2
    because weight is inversely proportional to the square of distance.

    The number you want is W'

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question