1
Phy 2053 Announcements
1.
Exam 1
Feb 18, 8:20 – 10:10 pm
Please get there
at least
10 minutes early, and preferably 20 minutes
Room assignments
If your last name begins with
A through P
, you should go to
Carleton 100
If your last name begins with
R through Z
, you should go to
Pugh 170
You be allowed one
handwritten
formula sheet (both sides)
Exam
conflicts:
Anyone
with
exam
conflicts,
send
email
to:
[email protected] and [email protected]
Include the reason for the conflict
There are still lots of Student Solution Manuals available at the Reitz Union
Book store
2.
Webassign homework #3 due on Wednesday by midnight
Webassign useful information  the final answer usually requires 3
significant figures, and you should keep at least that many significant
figures in intermediate steps to get the right answer.
By now, you should be familiar (and
comfortable) with:
Newton’s Laws 1, 2, and 3
Inertia, mass,
Σ
F
= m
a
, action/reaction
Assumptions (for now)
1.
Objects behave as particles
2.
Neglect masses of strings, ropes, pulleys,
springs
Applications of Newton’s Laws
Accelerating and equilibrium situations
Using freebody diagrams
Two objects connected by a massless string
Draw free body
diagrams
Apply Newton’s Laws
separately to each
object
The magnitude of
the acceleration of
both objects will be
the same
The tension is the
same in each
diagram
Solve the
simultaneous
equations
Two objects with masses of 3.00 kg and
5.00 kg are connected by a light string
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 Spring '06
 Buchler
 Physics, Energy, Force, Friction, Inertia, Kinetic Energy, Mass, Work

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