Universal Law of Gravitation Quiz
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Questions and Answers

What is the value of the acceleration due to gravity (g) on Earth?

  • 9.5 ms–2
  • 9.8 m/s2 (correct)
  • 6.67 × 10–11 Nm2/kg2
  • 6.4 × 106 m

    • What is the formula for weight of an object on Earth?

  • $W = m - g$
  • $W = m \div g$
  • $W = m \times g$ (correct)
  • $W = m + g$

    • If an object is just let fall from a height, what is the initial velocity (u)?

  • -9.8 ms–2
  • 6 × 1024 kg
  • 0 (correct)
  • 9.8 m/s2

    • What is the measure of inertia of an object?

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

    What does the weight of an object depend on?

    <p>Both mass and acceleration due to gravity</p> Signup and view all the answers

    What happens to the final velocity of an object projected vertically upward at its maximum height?

    <p>$v = 0$</p> Signup and view all the answers

    What is the universal law of gravitation?

    <p>The force between two objects is inversely proportional to the product of their masses and directly proportional to the square of the distance between them.</p> Signup and view all the answers

    What is the SI unit of the universal constant G?

    <p>Nm2/kg2</p> Signup and view all the answers

    What is the importance of the universal law of gravitation?

    <p>Explains the force that binds us to the earth.</p> Signup and view all the answers

    What happens when an object falls towards the earth under gravitational force alone?

    <p>It is said to be in free fall.</p> Signup and view all the answers

    What is acceleration due to gravity denoted by?

    <p>'g'</p> Signup and view all the answers

    If an object is placed on the earth, what is 'd' equal to in the equation for gravitational force?

    <p>'R' (radius of the earth)</p> Signup and view all the answers

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