Exams › SSC CGL (Prelims) › General

The key quantity allowing a satellite to sustain orbit without ongoing thrust is:

1. Mass
2. Gravitational force
3. Orbital velocity
4. Atmospheric drag

Correct answer: Orbital velocity

Solution

A satellite remains in orbit because it has the correct orbital velocity, which allows gravity to act as the centripetal force. Without this speed, it would either fall back to Earth or move away from orbit.

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