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Informal sessions:

o Tu 3:30-4:20pm, RAS 218;

o Fri 4-4:50pm, ECJ 1.204.

Lecture 16

1. W-E theorem

· Two equivalent forms.

· Inclusion of other forms of energies: e.g. Heat, nuclear energy (E=mc²)

2. W-E theorem + circular motion

3. W-E theorm and power

4. Potential energy function

· Mass-spring system

· A system of two atoms:

1. E<0 case,

2. E>0 case.

Reminders:

• There is the instructor’s informal session today. See above for time and location. Bring your questions on chapters 7, 8, and on hw6 to the session.

• Over the weekend, download hw7 if available. Review chapters 5-8. If time permits

preview chapter 9.

Midterm 2 (Wed. 10/15) includes HW4-7, chapters 5-9, 10*