Gravitational Potential Energy Quiz
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Questions and Answers

Which type of energy does an object possess due to its position in a gravitational field?

  • Thermal energy
  • Potential energy (correct)
  • Kinetic energy
  • Electrical energy

    • What happens to gravitational potential energy as a basketball descends?

  • It increases
  • It decreases (correct)
  • It remains constant
  • It transforms into electrical energy

    • In terms of work done, what happens when an object is moved up against gravity?

  • Negative work is done by the gravitational force (correct)
  • Positive work is done by the gravitational force
  • Work is done by the object itself
  • No work is done by the gravitational force

    • According to the work-energy theorem, what does the work done by the net force on a particle equal?

    <p>Change in total mechanical energy</p> Signup and view all the answers

    When an object moves down in a gravitational field, what form of energy does it gain?

    <p>Kinetic energy</p> Signup and view all the answers

    How is the change in gravitational potential energy related to the work done by gravity?

    <p>&quot;Change in potential energy is positive when more work is done by gravity&quot;</p> Signup and view all the answers

    What is the formula for calculating gravitational potential energy?

    <p>$PE = mgh$</p> Signup and view all the answers

    Which quantity is conserved when only the force of gravity does work on a system?

    <p>Total mechanical energy</p> Signup and view all the answers

    What is the expression for calculating net work using the work-energy theorem?

    <p>$W = \Delta KE$</p> Signup and view all the answers

    If an object has a mass of 5 kg and is lifted to a height of 10 m, what is its gravitational potential energy?

    <p>500 J</p> Signup and view all the answers

    Which law states that the total mechanical energy of a system remains constant when only conservative forces are at play?

    <p>Law of Conservation of Mechanical Energy</p> Signup and view all the answers

    How does the potential energy change as an object is lifted higher above the ground?

    <p>Potential energy increases</p> Signup and view all the answers

    What is the unit of work in the SI system?

    <p>1 N · m</p> Signup and view all the answers

    When does work done by a force become negative?

    <p>When the force is perpendicular to the displacement</p> Signup and view all the answers

    What is the work done by a constant force acting at an angle of 60 degrees to the displacement?

    <p>Cannot be determined</p> Signup and view all the answers

    If an object is lifted with a force of 5 N at a constant speed for a distance of 3 m, how much work is done?

    <p>15 J</p> Signup and view all the answers

    At what angle between force and displacement would the work done be zero?

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

    When is work done by a system considered positive?

    <p>When there is a component in the direction of displacement</p> Signup and view all the answers

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