Engineering Board Exam Reviewer · Physics · medium
What is the orbital speed of a satellite in a circular orbit just above the Earth's surface? (g = 9.81 m/s2, R = 6371 km)
- 7.91 km/s
- 11.18 km/s
- 62.50 km/s
- 3.00 km/s
Answer
A. 7.91 km/s
Solution
v = sqrt(gR) = 9.81 × 6.371 × 106 = 7.91 km/s.
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