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

Explanation

To solve the problem, we need to find the value of \( f \) when a platform is arranged at a height \( R \) from the surface of the Earth, where \( R \) is the radius of the Earth and \( v_e \) is the escape velocity from the surface of the Earth.

### Step-by-Step Solution:

1. **Understanding Escape Velocity**:
The escape velocity \( v_e \) from the surface of the Earth is given by the formula:
\[
v_e = \sqrt{\frac{2GM}{R}}
...