Determine the speed vb of the spacecraft at point b

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Q. 1992M3. A spacecraft of mass 1,000 kilograms is in an elliptical orbit about the Earth, as shown above. At point A the spacecraft is at a distance rA = 1.2 x 107 meters from the center of the Earth and its velocity, of magnitude VA = 7.1 x 103 meters per second, is perpendicular to the line connecting the center of the Earth to the spacecraft. The mass and radius of the Earth are ME = 6.0 X 1024 kilograms and rE = 6.4 X 106 meters, respectively.

Determine each of the following for the spacecraft when it is at point A .

a.The total mechanical energy of the spacecraft, assuming that the gravitational potential energy is zero at an infinite distance from the Earth.

b.The magnitude of the angular momentum of the spacecraft about the center of the Earth.

Later the spacecraft is at point B on the exact opposite side of the orbit at a distance rB = 3.6 X 107 meters from the center of the Earth.

c.Determine the speed vB of the spacecraft at point B.

Suppose that a different spacecraft is at point A, a distance rA = 1.2 X 107 meters from the center of the Earth. Determine each of the following.

d.The speed of the spacecraft if it is in a circular orbit around the Earth

e.The minimum speed of the spacecraft at point A if it is to escape completely from the Earth

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It is related to topic gravitation and motion of object/satellite/planet around heavy object/earth/sun under Newton’s laws of gravitation and Kepler’s laws of planetary motion. The paper has been prepared in Microsoft office words document.

Reference no: EM1350209

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