Phy
s
i
c
s
7A
DL M 6 Ov
e
rvi
e
w
C G 2
.
2 M
ec
hani
c
al En
e
rgi
e
s
²
Quantitativ
e
Appli
c
ation
s
A
c
t2
.
2
.
2
Followup of C G 2
.
2 FNT
s
(~ min)
Learning Goals:
Becoming convinced that you can rely on the logic of the model to think your way through to
understanding and making sense of very difficult/tricky physical phenomena
C G 2
.
3 Graphi
c
ally R
e
pr
e
s
e
nting En
e
rgy R
e
lation
s
hip
s
A
c
t2
.
3
.
1
Graphi
c
ally R
e
pr
e
s
e
nting En
e
rgy R
e
lation
s
hip
s
(~ min)
Learning Goals:
Obtaining a
c
on
s
e
rvation of
e
n
e
rgy
e
quation
in algebraic form that results from applying the
energyinteraction model for a variety of mechanical systems involving gravitational PE
R
e
alizing
and
Und
e
r
st
anding
that in those situations when there is only one other energy system,
besides PE
grav
, then, since PE
grav
depends only on height, the other energy system depends only
on height as well.
Understanding the graphical interpretation of a conservation of energy equation involving two
energy systems, one of which depends explicitly on the observable position.
Understanding the constancy of the
t
o
t
al
e
n
e
rgy
and its graphical interpretation in a graph of two
energy systems, both plotted as a function of a position.
C G 2
.
2 M
ec
hani
c
al En
e
rgi
e
s
²
Quantitativ
e
Appli
c
ation
s
A
c
t2
.
2
.
3
Sloppy
/
Intuitiv
e
R
e
a
s
oning v
.
Pr
ec
i
s
e
R
e
a
s
oning U
VLQJ ³
7KH 02'(/6´
(~ 30 m)
Learning Goals:
Gain more confidence in using the energyinteraction model to analyze more complicated
mechanical systems.
Gain more confidence in using the algebraic results obtained from application of the model to
gain insight into the physical situation.
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 Fall '08
 PARDINI
 Physics, Energy, Kinetic Energy, energy system

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