Rigid Body Dynamics Quiz
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Questions and Answers

What is the significance of the center of mass in a system of particles?

  • It represents the average position of all the particles in the system. (correct)
  • It determines the shape of the rigid body.
  • It is the point where the total mass of the system is concentrated. (correct)
  • It indicates the location of the heaviest particle in the system.

    • Which of the following best defines a rigid body?

  • A body whose particles are free to move independently.
  • A body that does not deform and maintains a constant shape. (correct)
  • A body made entirely of particles with zero size.
  • A body that can change shape under an applied force.

    • Why is treating large bodies as point masses inadequate?

  • Their mass cannot be concentrated at a single point.
  • They always change shape under any motion.
  • They participate in rotational motion only.
  • They have a finite size and their internal structure affects motion. (correct)

    • What is one characteristic of real bodies that is often negligible in certain scenarios?

    <p>Their deformation under force.</p> Signup and view all the answers

    What can be assumed about the motion of particles in a rigid body?

    <p>The distances between particles do not change.</p> Signup and view all the answers

    What characterizes pure rotational motion?

    <p>All particles have the same angular velocity around a fixed axis.</p> Signup and view all the answers

    In rolling motion, what happens to the point of contact with the surface?

    <p>It stays at rest at all times.</p> Signup and view all the answers

    What defines a rigid body?

    <p>A body that maintains its shape and size, neglecting deformations.</p> Signup and view all the answers

    Which is an example of rolling motion?

    <p>A sphere rolling down a hill.</p> Signup and view all the answers

    Which statement is true about rotation about a fixed axis?

    <p>It restricts a rigid body from translation around that axis.</p> Signup and view all the answers

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