The
mass of earth is determined by using law of gravitation.
Consider
a body of mass m is place on the
surface of earth where M is the mass
of earth. The distance b/w the centres of the body and the earth are R which is equal to the radius of
earth. As every body placed on earth is v very small as compared to earth. So
it radius (distance) is neglected.
Formula for
mass of earth: According to law of gravitation
Density of earth
Since the
density is defined as the mass per unit
volume is called density.
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