The distance between the center of the earth and the center of the ellipse 40 000 km, the apogee distance is the five times of the perigee distance of a satellite in an elliptical orbit. Determine the following: 1- Semi-major axis of the elliptical orbit. 2- Orbit eccentricity 3- The apogee distance and perigee distance. 4. The orbital period 5. If the elliptical orbit is changed to be circular orbit, determine the orbital period for the new orbit (circular orbit)
Gravitational force
In nature, every object is attracted by every other object. This phenomenon is called gravity. The force associated with gravity is called gravitational force. The gravitational force is the weakest force that exists in nature. The gravitational force is always attractive.
Acceleration Due to Gravity
In fundamental physics, gravity or gravitational force is the universal attractive force acting between all the matters that exist or exhibit. It is the weakest known force. Therefore no internal changes in an object occurs due to this force. On the other hand, it has control over the trajectories of bodies in the solar system and in the universe due to its vast scope and universal action. The free fall of objects on Earth and the motions of celestial bodies, according to Newton, are both determined by the same force. It was Newton who put forward that the moon is held by a strong attractive force exerted by the Earth which makes it revolve in a straight line. He was sure that this force is similar to the downward force which Earth exerts on all the objects on it.
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