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Lectures
and Homework, TT-system
Lecture 9:
Newton’s laws of motion:
- The
first law
- The
second law: F=ma
- The
third law
Applications of F=ma
- Elevator
problems
- Pushing
two blocks (no friction case, with friction case)
- String
tension, pulley
- Incline
plane and decomposition of a force vector into || and ^
components.
Reminder:
- Midterm
1 is at Wel 2.224, 7pm tonight. Be there by
6:50pm
Re-work midterm problems:
- To
encourage you to take another hard look at problems in the midterm01,
after the exam please download corresponding
“reexam01” set, which is your midterm, except for a different version
number.
- Treat
reexam01 as a homework set. Work on the set and submit your answers to the
TT-system.
- To
avoid the time-conflict with HW4, the due-time for reexam01 will be at 1am
on Monday, 9/24 (or Sunday evening).
- Your
Midterm01-score and reexam01-score will not be posted until after the due
time of the reexam01.
- For
those who have made 85% or more in the reexam01, extra credit will be
earned in the TA session. (See your TA for details)
- There
will be no attendance-test for the week immediately after the
midterm.