Work and Energy
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Questions and Answers

Which factor is NOT considered when calculating the work done on a system by an agent exerting a constant force?

  • Angle between the force and the displacement vectors
  • Magnitude of the displacement
  • Mass of the system (correct)
  • Magnitude of the force
  • When does a force do no work on an object?

  • When the force is perpendicular to the displacement of its point of application (correct)
  • When the force is applied to a rigid object
  • When the force is the only force acting on the object
  • When the force is applied in the same direction as the displacement
  • For a deformable system, what is true about the displacement associated with the forces applied?

  • It is always perpendicular to the force applied
  • It is generally not the same as the displacement of the object (correct)
  • It is directly proportional to the magnitude of the force applied
  • It is always equal to the displacement of the object
  • When is work considered positive in relation to the direction of the force?

    <p>When the force and displacement are parallel</p> Signup and view all the answers

    Which forces do no work on an object according to the given text?

    <p>Both gravitational and normal forces</p> Signup and view all the answers

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