Question

What is center of gravity? Where does the center of gravity of spheres lie?​

Answer 1

Explanation:

The center of gravity of Earth lies at the center of Earth. Its because at that point, the mass of the Earth is equally distributed in all the directions, thus pulling equally in all directions. Hence the net pull is zero. 

As the distance from the centre decreases, the acceleration due to gravity also decreases.

 At the center the distance is zero, hence gravity is zero.

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Answer 2

Answer:

The geometrical center of triangle is the intersection of the Medians called Centeroid.. So center of gravity of Sphere lie at its center and Center of gravity lie at the Centroid of a triangle