Question

why universal gravitational constant is scalar?

Answer 1

Magnitude of the Force F of gravitational attraction between two masses M and m, separated by a distance d, is given by:

   F = G M m / d²
            where G = Universal Gravitational Constant

   The force is directional and is a vector.  G is a scalar and is a constant.  It is a scalar because it does not follow the law of addition of vectors.

 Let  G = G1 between masses M1, M.  Let G = G2 between masses M2, M.  Then the G3 between M1 and M2  is still same as G and not the  vector addition of G1 and G2.

  G is same in all directions and between any type of masses.  Hence, it is directionless.  So it is only a scalar.

Answer 2

Answer:

The universal Gravitational constant(G) is a scalar quantity as it is not in a particular direction. A vector quantity should possess both magnitude and direction. Hence gravitational constant is a scalar quantity as it does not depend on direction.

Explanation:

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