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Work
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Work

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Questions and Answers

What is the unit of work?

  • Joule (J) (correct)
  • Watt (W)
  • Kilogram (kg)
  • Newton (N)

    • When the force and displacement are perpendicular to each other, the work done is?

  • Positive
  • Negative
  • Depends on the magnitude of the force
  • Zero (correct)

    • If a force of 50 N is exerted in the direction of displacement of 10 m, the work done is?

  • 5 J
  • 100 J (correct)
  • 50 J
  • 500 J

    • In Example 1, when the horse exerts a force of 400 N at an angle of 20° and moves the barge 1.0 km, the work done is?

    <p>400 J</p> Signup and view all the answers

    When a 5-kg weight is suspended in the air by a strong cable, the work done in suspending the weight is?

    <p>0 J</p> Signup and view all the answers

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