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Chapter 13

PHYSICS 7E Chapter 13: Periodic Motion


Department
Physics
Course Code
PHYSICS 7E
Professor
Anne Kirkby
Chapter
13

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Ch .l4 Periodic Motion
simple Harmonic Motion ax -acceleration a
ax (basic differential equation of SHM )¥1
µ=t󲍻(displacement in SHM )
T=¥,w=zaf,T=t
#a Iii::"
:9:ie :s:* a
w-rate ,how fast .unit :rads T,-all measure how fast
For spring -mass system :w=JI stable equilibrium
Alinear restoring force
horizontal (vertical
i'iii±ta%iiiiion÷:
act )=-Aw >
cos (wt -101 )󲍻ama×=AwZ
The simple Pendulum
'w,f=zaw ,¥
Torsion Pendulum
.
.
a.m
O't '-Acoscuttoll
,
-
II¥= -KO .w=/
energy
Energy in SHO _E=IkA '
u
Ez,does not depend ont !
position
SHO with damping
Ae-¥mt when w'
-wlb is small )damping
-when Im -Emiko over damping
Wizz when Im -l¥mf=o critical damping
da¥T= -Ix -kinda driving
-w
Sho equation dumping term
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