so that weight show that weight of an object on the earth is 1/6 of its weight on the earth given that the mass of the earth is hundred times the mass of the moon and its radius is 4 times that of the Moon
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Answer:
For moon
F = g×m×M/r² ......eq 1
For earth
F' = g×m×M'/(r')²
In both cases
where g is the gravitational constant
m is the mass of object
But M is mass of moon
and M' is mass of earth
r is radius of moon and r' is the radius of earth.
Given that,
100 M = M'
4 r = r'
Now substituting the above values,
F' = g×m×100M/(4r)² = g×m×100M/16r²
= 100/16 ×gmM/r²
= 1/6 × gmM/r² (approximate)
hence proved
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