So this equation can be seen as a version of the equation for a simple gravity pendulum with a length equal to the radius of the Earth.
2.
The precision of the early gravity measurements above was limited by the difficulty of measuring the length of the pendulum, " L " . " L " was the length of an idealized simple gravity pendulum ( described at top ), which has all its mass concentrated in a point at the end of the cord.
मोबाइल