Go to: Course homepage, Lectures

Lecture 15

Conservative force and potential energy function

• Form F to U
• Form U to F
• Work against a conservative force is path independent.

(Work againt a nonconservative force is path dependent)

Power

W-E theorem problems which involve a circular motion

Reminders:

• Review chapter 7 and 8. Work on hw6.
• Exam1 has been regraded, except version 136 (Quest is working on it).

Please email to Matt and cc to me if you have further questions or concerns.

• For our current semester, we use two Quest-display modes:
  1) The ss-mode where the scaled score of the exam is displayed.
  2) The %-mode where the scaled score of the exam is not displayed.
  For now, the Quest-system is set in the ss-mode.  Please record
  your scaled score of exam1 right away, if you have not already done so.
  After 3pm today the system will be reverted back to the  %-mode.