Gravitational Fields and Forces
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Questions and Answers

Which statement best describes Newton's Law of Gravitation?

  • The force is inversely proportional to the product of the masses. (correct)
  • The force is directly proportional to the distance between two objects.
  • The force is inversely proportional to the masses.
  • The force is inversely proportional to the square of the distance between two objects.

    • What does a tangent drawn to a gravitational force field line represent?

  • The direction of the gravitational field at that point (correct)
  • The mass of the object creating the gravitational field
  • The distance between two objects in the field
  • The magnitude of the gravitational force at that point

    • What is the definition of gravitational field intensity?

  • The gravitational force at a certain point
  • The gravitational force acting on a unit mass (correct)
  • The gravitational force per unit distance
  • The gravitational force between two unit masses

    • Which of the following is a property of gravitational force field lines?

    <p>They are always perpendicular to the equipotential surfaces.</p> Signup and view all the answers

    Gravitational force is best described as:

    <p>An attraction force that acts between any two masses.</p> Signup and view all the answers

    What does it mean when it is said that gravitational force field lines do not intersect?

    <p>The direction of the field cannot be ambiguous at any point.</p> Signup and view all the answers

    Study Notes

    Gravitational Fields

    • Gravitational force is an attraction force that acts between any two masses, and is also known as the weight of an object.

    Newton's Law of Gravitation

    • The mutual gravitational attraction force between two objects in space is directly proportional to the product of their masses.
    • The mutual gravitational attraction force between two objects in space is inversely proportional to the square of the distance between the two objects.

    Gravitational Force Field Lines

    • Gravitational force field lines represent the direction of travel of a unit mass kept in a gravitational field.

    Properties of Gravitational Force Field Lines

    • Gravitational force field lines are always pointed towards the objects.
    • Gravitational force field lines are always perpendicular to the equipotential surfaces.
    • Gravitational force field lines do not intersect with each other.
    • The tangent drawn to a gravitational force field line represents the direction of the gravitational field at the same point.

    Gravitational Force Field Intensity

    • Gravitational force field intensity is the gravitational force acting on a unit mass.
    • Gravitational force field intensity is represented by the symbol g and is calculated by the formula g = F / m, where F is the gravitational force and m is the mass.

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    Description

    Understand the concepts of gravitational force, Newton's Law of Gravitation, and gravitational force field lines. Learn about the attraction force between masses and its relation to distance and mass product.

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