The earth how to make gravitation

Question

the earth have a gravitation force  but the  gravitational force how to generated

Answer

The Earth has a gravitational force because of its huge mass, which is almost 5.972 × 10^24 kg.And from the Newtons formula, we have F = G*(m1*m2)/r^2because of m being very large, Earth has the gravitational force

Answer

Answer

The generation of gravitational force of the Earth comes from its mass. All the mass will produce a merge d gravitational pull on the mass of all your body and that's what actually gives you weight.

Answer

The gravity on the surface of the Earth varies from 9.780524 m/s2 on the equator to
  
about 9.83233 cm/s2 at the poles. The variation is chiefly brought about by the irregularities
  
in the shape of the Earth and its rotation, but there are also several other sources of minor importance such as the local fluctuations in the density etc.
  
 
  
          In recent years, great strides have been made in our knowledge of the gravitational field
  
of the Earth through observations based on the positions of artificial satellites. It has been found possible to evaluate the coefficients of several terms in the spherical harmonic expansion of the Earth’s gravitational potential. As a consequence of these studies the gravity at any point on the Earth can now be predicted to a degree of accuracy that is beyond the reach of formulae based on surface gravity measurements.
  
 
  
The geoid or the free surface of the ocean is in equilibrium under the influence of both the gravitational attraction of the Earth and its centrifugal force. There should be no tangential force parallel to the surface of the sea. since otherwise water will flow horizontally. Thus the resultant of gravity and the centrifugal force should everywhere be normal to the geoid so that the water surface becomes an equipotential surface.
  
 
  
SURFACE GRAVITY
  
What we call the acceleration due to gravity is the resultant of the gravitational attraction of the Earth and the centrifugal force on its surface. To this must be added the free air and Bouger corrections in order to obtain the gravity on the surface of the Earth.
Reference:
  
Tsoulis, D., & Patlakis, K. (2013). A spectral assessment review of current satellite-only and combined Earth gravity models. Reviews of Geophysics. https://doi.org/10.1002/rog.20012

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The earth how to make gravitation

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