UNIVERSE
SATELLITESICY BODIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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apogee
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zenith
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perigee
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None of the above
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Detailed explanation-1: -Question 19 Acceleration is greater for a satellite when it is at the apogee (farthest point) zenith; perigee (closest point).
Detailed explanation-2: -The velocity is greatest at perigee and it is slowest at apogee. A circular orbit is a special case where the magnitude of the velocity is constant throughout the orbit. It is from these observations that we see how to change from a lower orbit to a higher orbit.
Detailed explanation-3: -The acceleration due to gravity g is therefore proportional to the radius R. Explanation: For two satellites of equal mass in circular orbits of radii R1 and R2, The above equation is merely Kepler’s third law as applied to satellites in circular orbits.
Detailed explanation-4: -Perigee: A point for a satellite closest from the Earth. It is denoted as hp. Line of Apsides: Line joining perigee and apogee through centre of the Earth. It is the major axis of the orbit.