Work Done by Force on an Object Quiz
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Questions and Answers

In Scenario A, what is the angle between the force vector and the displacement vector?

  • 45 degrees
  • 90 degrees
  • 180 degrees
  • 0 degrees (correct)

    • In Scenario C, how are the force vector and the displacement vector oriented relative to each other?

  • At right angles (correct)
  • Opposite directions
  • Perpendicular
  • Parallel

    • What is the unit of work used to calculate force causing a displacement of one meter?

  • Newton (N)
  • Joule (J) (correct)
  • Ohm (Ω)
  • Watt (W)

    • If a vertical force causes a horizontal displacement, does it do work on the object?

    <p>No, it does not do any work</p> Signup and view all the answers

    When multiple forces act upon an object, what can be said about the total work done by all forces?

    <p>It can be the sum of individual works done by each force</p> Signup and view all the answers

    When a force acts leftward and displacement is rightward, what is the angle between the force vector and the displacement vector?

    <p>-90 degrees</p> Signup and view all the answers

    Which force is doing work on the block in the first example?

    <p>Applied force</p> Signup and view all the answers

    In the second example, why is no work done on the object?

    <p>There is no friction</p> Signup and view all the answers

    In a free-body diagram, what does the length of an arrow represent?

    <p>Magnitude of the force</p> Signup and view all the answers

    What is the unit of work in the International System of Units (SI)?

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

    If a force is applied to an object but it does not cause any displacement, what can be said about the work done by that force?

    <p>Zero work</p> Signup and view all the answers

    When a force is applied at an angle to the direction of displacement, what affects the work done by that force?

    <p>The angle between force and displacement</p> Signup and view all the answers

    What does a free-body diagram depict?

    <p>Type and direction of all the forces acting upon an object</p> Signup and view all the answers

    When calculating work done by a force, what is the formula used?

    <p>$W = F \times d \times \cos(\theta)$</p> Signup and view all the answers

    In the given example, how much work was done by the applied 10-N force?

    <p>5 Joules</p> Signup and view all the answers

    What is the unit of work in the International System of Units (SI)?

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

    When multiple forces act on an object, what should be considered when calculating work done?

    <p>Angle between each force and displacement</p> Signup and view all the answers

    In the given example with a frictional force, what was the amount of work done by the frictional force?

    <p>-50 Joules</p> Signup and view all the answers

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