SOLAR SYSTEM

UNIVERSE

CELESTIAL MECHANICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Satellites will travel around Earth in elliptical paths with the center of Earth at one of the foci.
A
Kepler’s 1st Law
B
Kepler’s 2nd Law
C
Kepler’s 3rd Law
D
None of the above
Explanation: 

Detailed explanation-1: -The equation for Kepler’s Third Law is P² = a³, so the period of a planet’s orbit (P) squared is equal to the size semi-major axis of the orbit (a) cubed when it is expressed in astronomical units.

Detailed explanation-2: -Kepler’s First law: Every planet revolves around the Sun in an elliptical orbit and Sun is situated at one of its two foci. It is also termed as ‘the Law of Orbits’.

Detailed explanation-3: -Kepler’s three laws of planetary motion can be stated as follows: (1) All planets move about the Sun in elliptical orbits, having the Sun as one of the foci. (2) A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time.

Detailed explanation-4: -Application of Kepler’s law in satellite motion The motion around a central body obeys Kepler’s principles of planetary motion, and it does not depend on its origin, whether it is natural or human-made. We certainly understand that satellites orbit the Earth in a manner similar to the Earth revolving around the Sun.

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