Circular Motion and Centripetal Force Quiz
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Questions and Answers

Which force acts on an object moving along a circle and is directed towards the center of the circle?

  • Centripetal force (correct)
  • Frictional force
  • Gravitational force
  • Electromagnetic force

    • What is Kepler's first law of planetary motion?

  • The line joining the planet and the Sun sweeps equal areas in equal intervals of time.
  • The period of revolution of a planet around the Sun is directly proportional to the mean distance of the planet from the Sun.
  • Planets revolve around the Sun in circular orbits.
  • The orbit of a planet is an ellipse with the Sun at one of the foci of the ellipse. (correct)

    • What is Kepler's third law of planetary motion?

  • The square of the period of revolution of a planet around the Sun is inversely proportional to the mean distance of the planet from the Sun.
  • The period of revolution of a planet around the Sun is directly proportional to the mean distance of the planet from the Sun. (correct)
  • Planets revolve around the Sun in circular orbits.
  • The line joining the planet and the Sun sweeps equal areas in equal intervals of time.

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