Newton's Observation of Gravitational Force
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Questions and Answers

What led Newton to develop his law of gravitation?

  • Observing the motion of the planets
  • Chance observation of an apple falling from a tree (correct)
  • Studying the behavior of falling objects
  • Experiments with masses and distances in the laboratory

According to Newton's law of gravitation, how does the gravitational force depend on the masses of the two objects?

  • Gravitational force is inversely proportional to the product of the masses
  • Gravitational force is directly proportional to the product of the masses (correct)
  • Gravitational force is independent of the masses of the objects
  • Gravitational force is proportional to the sum of the masses

How does the gravitational force depend on the distance between the two objects, according to Newton's law of gravitation?

  • Gravitational force is proportional to the square of the distance between the objects (correct)
  • Gravitational force is independent of the distance between the objects
  • Gravitational force is directly proportional to the distance between the objects
  • Gravitational force is inversely proportional to the distance between the objects

What is another name for Newton's law of gravitation?

<p>Newton's law of universal gravitation (B)</p> Signup and view all the answers

What is the nature of the gravitational force according to Newton?

<p>The gravitational force is always attractive in nature (C)</p> Signup and view all the answers

What was the chance observation that led Newton to ponder upon the force that attracts everything towards the Earth's surface?

<p>Observing an apple fall from a tree (D)</p> Signup and view all the answers

What is the relationship between the gravitational force and the distance between the two objects, according to Newton's law of gravitation?

<p>The gravitational force is proportional to the square of the distance between the objects (A)</p> Signup and view all the answers

According to Newton's Law of Gravitation, how does the gravitational force between two bodies change with the distance between them?

<p>Inversely proportional to the distance (D)</p> Signup and view all the answers

Who first determined the value of the universal gravitational constant?

<p>Henry Cavendish (B)</p> Signup and view all the answers

Why do celestial bodies like planets revolve around the Sun in our solar system?

<p>Balancing of gravitational pull and centrifugal force (B)</p> Signup and view all the answers

Which natural phenomena is NOT a result of gravitational forces?

<p>The Earth rotating on its axis (C)</p> Signup and view all the answers

What is the direction of the gravitational forces between two bodies as per Newton's Law of Gravitation?

<p>Equal in magnitude but opposite in direction (C)</p> Signup and view all the answers

If two bodies are placed twice as far apart from each other, how does the gravitational force between them change?

<p>It quarters (D)</p> Signup and view all the answers

In which way does the mass of a celestial body affect the gravitational force it exerts on another body?

<p>Higher mass increases the gravitational force (D)</p> Signup and view all the answers

In what form can Newton's Law of Gravitation be written for calculating the gravitational forces between two bodies?

<p><strong>F</strong> = GmM/r^2 (C)</p> Signup and view all the answers

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