The orbital velocity of a body close to the earth's surface is

1.	The orbital velocity of a body close to the earth's surface is
Answer» `8 "kms"^(-1)` `11.2 "kms"^(-1)` `3 xx 10^(8) "ms"^(-1)` `2.2 xx 10^(3) "kms"^(-1)` Solution :Since, orbital velocity of BODY close to earth can be given as `v_(o)=SQRT(RG)=sqrt(6400xx10^(3)xx10)=sqrt(64xx10^(6))=8xx10^(3) " ms"^(-1)` `v_(o)=8 " kms"^(-1)`.

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