Question 2 options:
Given the value for the universal gravitational constant, the average value for the acceleration due to gravity at the surface of Earth, and the radius of Earth, Earth’s mass is ____x1024kg
We have, acceleration due to gravity,
Where, G = Gravitational constant
=
R = radius of the Earth = ,
g = acceleration due to gravity on Earth surface
= 9.8 m/s2 and M is the mass of Earth, then, we can write,
=>
So, mass of Earth =
=
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