Calculation of gravitational force:-
Suddenly it came to my mind on 19th November night that the current calculation of gravitational force is not correct and calculation should be divided into two parts, actual and real gravitational force. Please consider my below findings.
Currently we are calculating the gravitational force of a planet/moon like below:-
According to Newton gravitational formula we calculate like below:-
Fgrav = (Gm1m2)/d2
• Fgrav is the force due to gravity • G is the universal gravitation constant 6.673 x 10-11 Nm2/kg2 • m1 is the mass of the first object • m2 is the mass of the second object • d is the distance between the centers of two objects
But here we never consider one very important factor i.e. the centrifugal force of the planet that has rotation. Due to the rotational speed the centrifugal force of the planet will increase and it will reduce the gravitational force of the planet.
For example the current acceleration due to gravity on earth surface is 9.8m/s2 and current rotational speed is 1670 kilometers/hour. But if this rotational speed would have been 3340 kilometers/hour the acceleration due to gravity on earth surface would have been very less than current one. So current gravitational force is not actual gravitational force of earth. If a planet with the size of Jupiter with proper amount of water and oxygen still we cannot even imagine that a human can live on that planet due to very high level of gravitational force ( for example a human being having 75kg of weight would become 6,375 kg on Jupiter surface and in such a situation a human being will not be able to even stand). But if the rotational speed of that planet is so high( for example 141950 Kilometers/hour) then the acting gravitational force become nearer to 9.8m/s2 and with that gravity human being can live even in a very larger planet based on its rotational speed which will decrease the gravitational force.
I might not be 100% correct in the calculation but real gravitation force of a planet is relates to its centrifugal force due to rational speed is like below:-
Fgrav ∝ 1/ CF (centrifugal force)
If centrifugal force increases real gravitational force will decrease and vice versa.
For example if earth’s rotational speed increase from 1670 kilometers/hour to 3340 kilometers/hour weight of all the particle on earth surface become ½ of its original weight and one full day duration will become 12 hours instead of 24 hours.