Question

(i) Define universal gravitational constant.
Give its SI units.
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Answer 1

Answer:

the universal constant relating force to mass and distance in Newton's law of gravitation. Synonyms: G, constant of gravitation, gravitational constant Type of: constant. a number representing a quantity assumed to have a fixed value in a specified mathematical context.

Hence, universal gravitational constant, Unit of F = newton (N) Unit of d = metre (m) Unit of m1 = Unit of m2 = kilogram (kg) Hence, unit of G = (newton metre squared per kilogram squared).

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Answer 2

Explanation:

The gravitational constant, denoted by the letter G, is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal gravitation and in Albert Einstein's general theory of relativity.