physics

posted by .

What linear speed must an Earth satellite have to be in a circular orbit at an altitude of 208 km above Earth's surface? (b) What is the period of revolution?

I got a to be 7786 m/s^2 but im not sure how to get b.

  • physics -

    m/s is speed
    m/s^2 is acceleration

    G m Me/r^2 = m v^2/r

    G Me/r = v^2

    r = .208*10^6 + 6.38*10^6 = 6.59 * 10^6 meters

    v^2 = 6.67*10^-11*5.98*10^24/6.59*10^6
    v^2 = 6.05*10^7 = 60.5*10^6
    v = 7780 m/s agree
    now
    circumference = 2 pi r
    time = circumference/speed

  • physics -

    is the time is seconds or minutes?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    What linear speed must an Earth satellite have to be in a circular orbit at an altitude of 186 km?
  2. Physics

    A satellite of mass 220 kg is launched from a site on Earth's equator into an orbit at 200 km above the surface of Earth. (a) Assuming a circular orbit, what is the orbital period of this satellite?
  3. physics

    A satellite moves in a circular orbit around Earth at a speed of 4390 m/s. (a) Determine the satellite's altitude above the surface of Earth. m (b) Determine the period of the satellite's orbit. h am I supposed to use rotational equations …
  4. physics

    A satellite moves in a circular orbit around Earth at a speed of 4390 m/s (a) Determine the satellite's altitude above the surface of Earth.(meters) (b) Determine the period of the satellite's orbit. (hours) I used the equation M(sattelite)V^2/r …
  5. physics

    (a) What linear speed must an Earth satellite have to be in a circular orbit at an altitude of 153 km?
  6. physics

    HELP PLEASE!!! A satellite moves in a circular orbit around Earth at a speed of 5085 m/s. (a) Determine the satellite's altitude above the surface of Earth. (b) Determine the period of the satellite's orbit.
  7. physics

    A satellite moves in a circular orbit around the Earth at a speed of 5661 m/s. (b) Determine the period of the satellite's orbit. the satilites altitude above the surface of earth is 6076312.71m. im using the equation P=2*pi*r/v and …
  8. PHYSIC

    1)What must be the orbital speed of a satellite in a circular orbit 740 above the surface of the earth?
  9. physics

    (a) What linear speed must an Earth satellite have to be in a circular orbit at an altitude of 129 km above Earth's surface?
  10. physics

    A satellite of mass 205 kg is launched from a site on Earth's equator into an orbit at 200 km above the surface of Earth. (a) Assuming a circular orbit, what is the orbital period of this satellite?

More Similar Questions