An artificial satellite is moving in a circular orbit of radius 42250km. Calculate it's speed in km/s, if it takes 24 hours to revolve around the earth.
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Answer:
3.07 km/s
Explanation:
r = 42250 km
distance covered in one revolution = 2πr
= 2×22/7×42250
= 265571.43 km
time taken for 1 revolution = 24 × 3600 = 86400s
∴ speed of satellite = distance/time = 265571.43/86400
= 3.07 km/s
in km/h speed = 11065.48 km/h
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