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Page-30 of Archives: May, 2013

Medium Earth Orbit (MEO)

MEO systems operate at about 8,000-20,000 km above the Earth, which is lower than the GEO orbit and higher than most LEO orbits. The MEO orbit is a...

May 21, 2013

Low Earth Orbits

A satellite can also be placed in Low Earth Orbits (about 1,000 kilometers above the Earth (between 400 miles and 1,600 miles)). However, satellites in LEO need a...

May 21, 2013

Polar Orbit & Clarke Orbit

Polar Orbit The Polar Orbit is not much suitable for communication purposes because it moved in a different direction than that of direction of earth’s rotation. So, the...

May 21, 2013

Altitude of Geostationary Orbit

Important points The height of the geostationary orbit is 35786 kilometers above earth In Geostationary Orbit, the satellite moves with an orbital speed of 11068 km per hours....

May 21, 2013

Geostationary and Geosynchronous Orbits

The core principle of an orbit is that as a satellite or object moved tangentially, it falls toward the earth / other body, but it moved so quickly...

May 21, 2013

Artificial Satellite Basics

Satellite refers to any project that is orbiting earth, sun or other planetary bodies. Satellites can be artificial or natural. The artificial satellites basically work on principle of...

May 21, 2013

Kepler’s Laws of Planetary Motion & Newton’s Law of Gravitation

In the early 1600s, Johannes Kepler proposed three laws of planetary motion as follows: Kepler’s First law (Law of orbits) Each planet moves around the sun in an...

May 21, 2013

Planets with the mean distances from the sun, their orbital periods and velocities

Planet Time Period (Earth Years Mean Distance from Earth (x109 m) Mean Velocity (x 103 m/s) T² / R³ ( x10-25) years² /km³ Mercury 0.241 57.91 47.875 2.991 Venus 0.615...

May 21, 2013

Uniform Circular Motion

Uniform Circular Motion When a particle moves in a circle with a constant speed then the motion is known as uniform circular motion. We can consider an object...

May 21, 2013

Horizontal Projectile Motion: Physics Notes

When an object is thrown from horizontal at an angle θ except 90°, then it will follow a trajectory and the motion is called projectile motion.  A horizontally...

May 21, 2013

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