Physics

posted by .

A satellite made of aluminum with mass 3500 kg travels on circulated path in 100 km height over the earth. Because of airresistance of the airveil the satellite loses energy and falls in a spiral down to earth. a) What is the mechanical energy of the satellite in the beginning and when he hits the earth. What is the change of the mechanical energy? b) If the whole mechanical energy transformes to heat, can the heat of the satellite get the melting point of aluminum? (Here you have to find heat capacity and the melting point of aluminum and use equation: Q=mcΔT).

  • Physics -

    a) mechanical energy= PE+KE
    PE= m(mearth*g*(Re/(Re+altitude)) *^2* altitude
    KE= 1/2 m v^2 where v is found by

    mv^2/(Re+h)= PE/h
    solve for v.

    b) mechanical energy at end? zero

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A satellite has a mass of 100 kg and is in an orbit at 2.00*10^6 m above the surface of the Earth (a) what is the potential enegry of the satellite at this location?
  2. force of gravity

    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?
  3. 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 …
  4. 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 …
  5. 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 …
  6. PHYSICS HELP

    A satellite of mass m is orbiting the earth, mass M , in a circular orbit of radius ra . Unfortunately a piece of space debris left by a passing rocket lies directly in the satellite's path. The piece of debris has the same mass m …
  7. physics 1

    Two satellites are in circular orbits around the earth. The orbit for satellite A is at a height of 418 km above the earth’s surface, while that for satellite B is at a height of 731 km. Find the orbital speed for (a) satellite A …
  8. physics

    Two satellites are in circular orbits around the earth. The orbit for satellite A is at a height of 418 km above the earth’s surface, while that for satellite B is at a height of 731 km. Find the orbital speed for (a) satellite A …
  9. 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 …
  10. physics

    Two satellites are in circular orbits around the earth. The orbit for satellite A is at a height of 427 km above the earth’s surface, while that for satellite B is at a height of 873 km. Find the orbital speed for (a) satellite A …

More Similar Questions