force of gravity

posted by .

A satellite orbits around the earth. The mass of the satellite is 1170 kg, and its altitude is 220 km. The mass of the earth is 5.98×1024 kg. The radius of the earth is 6.38×106 m.

1)What is the gravitational force on the satellite?
2)What is the orbital velocity of the satellite?
3)What is the period of the satellites motion?
4)What is the gravitational potential energy of the satellite?
5)What is the total mechanical energy of the satellite in orbit?

  • force of gravity -

    Part 1

    Fg = m1m2g/d^2

    force of gravity = (mass 1)(mass 2)(gravitational constant)/distance^2

    Fg =(1170kg)(5.98 x 10^24kg)(g)/(220km + 6.38 x10^6)

    I don't remember what the exact value for g (gravitational constant) is, but you can probably get that from your text. It might be
    6.67 x 10^-11 N m^2/kg^2

  • force of gravity -

    Miss X meant G, not g.

    Fg=GMeMs/(re+alt)^2 watch units.

    Orbital velocity: Fg=Fcent
    Fg= Ms*v^2/(re+alt)

    solve for v
    Period:
    Period= 2PI*(re+alt)/velocity

    GPE= -GMeMs/(re+alt)

    total: GPE+ KE

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    Two Earth satellites, A and B, each of mass m, are to be launched into circular orbits about Earth's center. Satellite A is to orbit at an altitude of 7460 km. Satellite B is to orbit at an altitude of 20500 km. The radius of Earth …
  2. physics

    Two Earth satellites, A and B, each of mass m, are to be launched into circular orbits about Earth's center. Satellite A is to orbit at an altitude of 7460 km. Satellite B is to orbit at an altitude of 20500 km. The radius of Earth …
  3. physics

    An artificial satellite circling the Earth completes each orbit in 139 minutes. (The radius of the Earth is 6.38 106 m. The mass of the Earth is 5.98 1024 kg.) (a) Find the altitude of the satellite.
  4. physics

    A satellite moves in a circular orbit around the Earth at a speed of 5.8 km/s. Determine the satellite’s altitude above the surface of the Earth. Assume the Earth is a homogeneous sphere of radius 6370 km and mass 5.98 × 1024 kg. …
  5. Physics

    A satellite used in a cellular telephone network has a mass of 2160 kg and is in a circular orbit at a height of 670 km above the surface of the earth. What is the gravitational force Fgrav on the satellite?
  6. physics

    3. A satellite of mass 500 kg orbits the Earth with a period of 6000 s. The Earth has a mass of 5.98 x 1024 kg. (a) Calculate the magnitude of the Earth's gravitational force on the satellite. (b) Determine the altitude of the satellite …
  7. physics

    4(a) What is the magnitude of the gravitational force of the Earth on a surveillance satellite of mass 1040 kg that is in a grazing circular orbit 100 km above the surface of the Earth. (b) Find the magnitude of the acceleration of …
  8. Physics

    A satellite moves in a circular orbit around the Earth at a speed of 5.9 km/s. Determine the satellite’s altitude above the surface of the Earth. Assume the Earth is a homogeneous sphere of radius 6370 km and mass 5.98 × 1024 kg. …
  9. physics

    A satellite is in a circular orbit around the Earth at an altitude of 3.30 106 m. (a) Find the period of the orbit. (Hint: Modify Kepler's third law so it is suitable for objects orbiting the Earth rather than the Sun. The radius of …
  10. physics

    NASA launches a satellite into orbit at a height above the surface of the Earth equal to the Earth's mean radius. The mass of the satellite is 550 kg. (Assume the Earth's mass is 5.97 1024 kg and its radius is 6.38 106 m.) (a) How …

More Similar Questions