universal gravitational constant

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universal gravitational constant

A student calculates the universal gravitational constant in a physics textbook.

Definition
  1. Noun:
    • A fundamental physical constant: The "universal gravitational constant" is a fixed numerical value that appears in Newton's law of universal gravitation. It quantifies the strength of the gravitational force between two objects.
    • The proportionality constant in Newton's law: It is the constant 'G' that relates the gravitational force between two bodies to the product of their masses and the inverse square of the distance between their centers.
Usage Examples
  • Noun:
    • The value of the universal gravitational constant is extremely small.
    • Calculating the force between planets requires the use of the universal gravitational constant.
    • Scientists have worked to measure the universal gravitational constant with great precision.
Advanced Usage
  • "To determine the universal gravitational constant": Refers to the experimental process of measuring its value.
    • The Cavendish experiment was designed to determine the universal gravitational constant.
  • In equations: It is almost exclusively represented by the symbol 'G'.
    • The formula F = G * (m1m2)/r² contains the universal gravitational constant.*
Variants and Related Words
  • Gravitational constant (n): A common shortened form for "universal gravitational constant".
    • The gravitational constant is a key part of Einstein's field equations.
  • Constant of gravitation (n): Another synonymous term.
  • Newton's constant (n): A name reflecting its origin in Newton's law.
Synonyms
  • G: The standard symbol used in physics.
  • Cavendish's constant: A historical name referencing Henry Cavendish, who performed an early measurement.
Related Phrases
  • Law of universal gravitation: The physical law in which the constant is used.
  • Big G: An informal name used to distinguish it from 'g' (acceleration due to gravity).
universal gravitational constant

A student calculates the universal gravitational constant in a physics textbook.

Noun
  1. (physics) the universal constant relating force to mass and distance in Newton's law of gravitation

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