The earth is assumed to be a sphere of raduis `R`. A plateform is arranged at a height `R`
Channel: Doubtnut
Date: 2020-01-19

The earth is assumed to be a sphere of raduis `R`. A plateform is arranged at a height `R` from the surface of the `fv_(e)`, where `v_(e)` is its escape velocity form the surface of the earth. The value of `f` is