Gravitational Force: Characteristics and Equation
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Questions and Answers

Which of the following statements about gravitational force is true?

  • It depends on the color of the objects
  • It is a vector force (correct)
  • It is always repulsive
  • It acts along the line joining the edges of the objects
  • What is the equation for gravitational force between two objects according to Newton's law of gravitation?

    F = G * (m1 * m2) / r^2

    Increase in mass of either object results in an increase in gravitational __________.

    force

    Gravitational force depends on the color of the objects involved.

    <p>False</p> Signup and view all the answers

    Study Notes

    Gravitational Force

    Definition: Gravitational force is a universal force that attracts two objects with mass towards each other.

    Characteristics:

    • Always attractive, never repulsive
    • Depends on the mass of the objects and the distance between them
    • Acts along the line joining the centers of the two objects
    • Is a vector force, having both magnitude and direction

    Gravitational Force Equation:

    • F = G * (m1 * m2) / r^2
      • F: gravitational force between the two objects
      • G: gravitational constant (6.67408e-11 N*m^2/kg^2)
      • m1 and m2: masses of the two objects
      • r: distance between the centers of the two objects

    Factors Affecting Gravitational Force:

    • Mass: Increase in mass of either object increases the gravitational force
    • Distance: Increase in distance between objects decreases the gravitational force
    • Gravitational constant: A fundamental constant of nature, constant at all points in space and time

    Types of Gravitational Forces:

    • Gravitational force between two objects: Attracts two objects with mass towards each other
    • Gravitational force of the Earth: Attracts objects towards the center of the Earth, responsible for weight and keeping objects on the surface
    • Gravitational force in the universe: Responsible for the motion of planets, stars, and galaxies

    Gravitational Force

    • Gravitational force is a universal force that attracts two objects with mass towards each other.
    • It is always attractive, never repulsive.

    Characteristics of Gravitational Force

    • Depends on the mass of the objects and the distance between them.
    • Acts along the line joining the centers of the two objects.
    • Is a vector force, having both magnitude and direction.

    Gravitational Force Equation

    • F = G × (m1 × m2) / r^2, where: • F is the gravitational force between the two objects. • G is the gravitational constant (6.67408e-11 N·m^2/kg^2). • m1 and m2 are the masses of the two objects. • r is the distance between the centers of the two objects.

    Factors Affecting Gravitational Force

    Mass

    • Increase in mass of either object increases the gravitational force.

    Distance

    • Increase in distance between objects decreases the gravitational force.

    Gravitational Constant

    • A fundamental constant of nature, constant at all points in space and time.

    Types of Gravitational Forces

    Gravitational Force Between Two Objects

    • Attracts two objects with mass towards each other.

    Gravitational Force of the Earth

    • Attracts objects towards the center of the Earth, responsible for weight and keeping objects on the surface.

    Gravitational Force in the Universe

    • Responsible for the motion of planets, stars, and galaxies.

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    Description

    Learn about the definition, characteristics, and equation of gravitational force, a fundamental force in physics that attracts objects with mass towards each other.

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