QUESTION

GS

Medium

Science & Technology

Prelims 2011

An artificial satellite orbiting around the Earth does not fall down. This is so because of the attraction Of Earth -

Select an option to attempt

Explanation

An artificial satellite orbiting the Earth is continuously falling toward the Earth due to gravitational attraction, but because it also has a tangential (sideways) velocity, it keeps missing the Earth — thus staying in orbit.

The gravitational force of the Earth acts as the centripetal force, providing the necessary acceleration that keeps the satellite moving in its circular or elliptical path around the planet.

Hence, the satellite doesn’t fall down; instead, it is in continuous free fall, balanced by its orbital motion.

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