Common exam II will take place the FIRST MONDAY
AFTER SPRING BREAK.
Sorry…. Schedule set by Registrar’s Office, not
Physics Dept.
Exam II will cover chapters 4, 5, 6, and 7. TODAYs
Material and NEXT WEEK’s material WILL be covered
on the exam.
Next week, I will be out of town at a Scientific
Conference. Professor Zhou will be giving the lecture. I
will be available via email if you need me.
1
Iclicker Question #1
In which of the following scenarios am I NOT doing work?
A)
B)
C)
D)
E)
Pushing a box up a frictionless incline.
Pushing a block up an incline with friction.
Moving a box from the table to the floor.
Carrying a heavy box across the room.
I am doing work in all of these examples
Iclicker Question #2
In which of the following scenarios am I NOT doing work?
A)
B)
C)
D)
E)
A
B
C
D
B and D
Scalar or Dot product
Calculates ‘product’ of vectors which are parallel to
each other.
Iclicker Question #3
Calculate
A)
B)
C)
D)
E)
AB
if
A  3iˆ  4 ˆj  kˆ
24
1k
1
-24
None of the above
B  4iˆ  3 ˆj
Work done by Spring
Is the kinetic energy derived from the work
done by gravity accurate?
http://www.lghs.net/ourpages/users/dburns/RRPhysics/
Road_Runner_Physics/Movie_files/RollingBoulder.mov