Circular Motion and Centripetal Force Quiz
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Questions and Answers

In the vertical circular motion described, what determines the motion after the initial energy is supplied?

  • The angular velocity
  • The gravitational force (correct)
  • The linear velocity
  • The tension in the rod
  • What happens to the linear speed of the object as it moves towards the brim of the circular path?

  • It decreases
  • It remains constant
  • It increases (correct)
  • It oscillates between increasing and decreasing
  • What is the relationship between the linear speed and the angular speed of the object during vertical circular motion?

  • Linear speed decreases while angular speed increases towards the brim
  • They both increase towards the brim
  • Linear speed increases while angular speed decreases towards the brim (correct)
  • They both decrease towards the brim
  • What is the primary force responsible for the vertical circular motion in the case of a controlled motion, such as a giant wheel?

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

    In the expression $T \cos \theta = mg$, what does $T$ represent?

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

    What is the relationship between the tension force $(T)$ and the centripetal force $(mr\omega^2)$ in vertical circular motion?

    <p>$T \sin \theta = mr\omega^2$</p> Signup and view all the answers

    In the expression $4\pi^2mrn^2 = \frac{mg}{\tan \theta}$, what does $n$ represent?

    <p>Frequency of revolution</p> Signup and view all the answers

    What is the purpose of the activity suggested in the text, using a funnel and a marble or ball bearing?

    <p>To visualize the changing linear and angular speeds</p> Signup and view all the answers

    In the case of vertical circular motion controlled only by gravity, what is the primary source of energy?

    <p>Gravitational potential energy</p> Signup and view all the answers

    What is the physical significance of the angle $\theta$ in the expressions involving tension force and centripetal force?

    <p>It represents the angle between the rod and the vertical</p> Signup and view all the answers

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