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Physics 3210

Physics 3210. Week 5 clicker questions. A. B. C. D. The central-force Lagrangian is What is the Lagrangian equation of motion in r?. A. B. C. A particle is observed to move in a spiral orbit r=k q . What is the force law that produces this orbit?. D. E. A. B. C.

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Physics 3210

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  1. Physics 3210 Week 5 clicker questions

  2. A. B. C. D. The central-force Lagrangian is What is the Lagrangian equation of motion in r?

  3. A. B. C. A particle is observed to move in a spiral orbit r=kq. What is the force law that produces this orbit? D. E.

  4. A. B. C. A particle moves in an orbit where its radius alternately increases and decreases with time. What determines the turning points of the motion? D. E.

  5. A. B. C. In one transit from rmin back to rmin, an orbit moves by an angle Dq. What condition on Dq must hold if the orbit closes on itself? D. E.

  6. Physics 3210 Week 5 Wednesday clicker questions

  7. Exam grade distribution Median = 66 Standard deviation = 22 Current course grade=55% exam, 45% homework

  8. A. B. C. In one transit from rmin back to rmin, an orbit moves by an angle Dq. What condition on Dq must hold if the orbit closes on itself? D. E.

  9. Which of these plots show a physically possible V(r) for the gravitational potential? C. A. B. D.

  10. Bounded circular motion with a fixed r. Bounded motion between a minimum and maximum r. Unbounded motion with a minimum r but no maximum r. Unbounded motion with neither a minimum nor a maximum r. For motion in gravitational potential characterized by V(r) as plotted, what type of motion corresponds to total energy E2?

  11. Bounded circular motion with a fixed r. Bounded motion between a minimum and maximum r. Unbounded motion with a minimum r but no maximum r. Unbounded motion with neither a minimum nor a maximum r. For motion in gravitational potential characterized by V(r) as plotted, what type of motion corresponds to total energy E1?

  12. A. B. C. Given the equationand the constantswhat is the correct way to rewrite the orbit equation? D. E.

  13. A. B. C. We showed thatWhat is the correct value of e when E=Vmin? D. E.

  14. Physics 3210 Week 5 Friday clicker questions

  15. A. B. C. We showed thatWhat is the correct range of e when Vmin<E<0? D. E.

  16. C. The orbits correspond to motion with equal energy. D. It cannot be determined from the information given. Which orbit corresponds to motion with larger total energy?

  17. A. B. C. What is the correct value of e when E=0? D. E.

  18. C. The orbits correspond to motion with equal angular velocity. D. It cannot be determined from the information given. Which parabolic orbit corresponds to motion with larger angular velocity (at a given angle)?

  19. A. B. C. What is the correct range of e when E>0? D. E.

  20. C. The orbits correspond to motion with equal energy. D. It cannot be determined from the information given. Which hyperbolic orbit corresponds to motion with larger total energy?

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