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An artificial satellite is moving in a c...

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.

Text Solution

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The correct Answer is:
3.06 km/s
Here, `r = 42250 km, t = 24 h` , speed, `v = ?`
From `v = (2pi r)/(t)`, `v = 2 xx (22)/(7) xx (42250)/(24) = 1.1 xx 10^(4)km//h`
`= (1.106 xx 10^(4)km)/(60 xx 60 s) = 3.06 km//s`
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