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05/01/2021 6:30 pm
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An artificial satellite is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hours to revolve around the earth.
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05/01/2021 6:34 pm
The Radius of orbit = 42250 km
= 42250 × 1000 m
Time taken for one revolution = 24 hours
= 24 × 60 × 60 s
∴ Speed = \(\frac{distance}{time}\) = \(\frac{2 \pi r}{time}\)
= 2 x \(\frac{22}{7}\) x \(\frac{42250 \times 1000}{24 \times 60 \times 60}\)
Speed = 3073.74 m s-1
= 3.07 km s-1
This post was modified 3 years ago by admin