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प्रश्न
A satellite is to revolve round the earth in a circle of radius 9600 km. The speed with which this satellite be projected into an orbit, will be ______.
पर्याय
9.8 km/s
64 km/s
6.532 km/s
8.325 km/s
MCQ
रिकाम्या जागा भरा
उत्तर
A satellite is to revolve round the earth in a circle of radius 9600 km. The speed with which this satellite be projected into an orbit will be 6.532 km/s.
Explanation:
`"V"_0 = sqrt("GM"/"r") = sqrt("gR"^2/"r")`
= `sqrt((10xx (64xx10^5)^2) /(9600xx10^3`
= 65.32 x `10^2` m/s
= 6.532 km/s
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