Question

Define universal gravitational constant. Describe its variations along height and depth.​

Answer 1

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The gravitational constant is the proportionality constant that is used in the Newton's Law of Gravitation. The force of attraction between any two unit masses separated by a unit distance is called universal gravitational constant denoted by G measured in Nm2/kg2.

Answer 2

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The gravitational constant is the proportionality constant that is used in the Newton's Law of Gravitation. The force of attraction between any two unit masses separated by a unit distance is called universal gravitational constant denoted by G measured in Nm2/kg2.

Value of acceleration due to gravity changes with height and depth from the earth's surface. It is maximum on the earth's surface. Its variation with height (or depth) is shown in the plot.