Class notes
Class notes PHYS 1151 (PHYS1151)
- Course
- PHYS 1151 (PHYS1151)
- Institution
- Northeastern University
Dissipative Forces Physics Notes
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ForcesDissipative
m otion
usuallyoppose
convert
energyinto
thermal thatdissipatesinto
energy
thesystemand
e nvironment
Twowaysofaskingthe
samething
variableForces
Hooke'sLawstatesthatthe
forceneeded tostretchorcompressabodyisproportionaltoitsdisplacementfromequilibrium on 3
am
Kss or k Is
1m
espringconstant amountofforceneededtostretchthespringperunitlength so
thestifferthespringthe
higherthespring c onstant
to
Howmuchworkisneeded stretchcompressfrom
equilibrium
app
to15cmgiven a springconstantof soum If c rate
a_Fapp ftp.jff
we Kasas risk taxa
We 150 0.15m 1.75
How workdidthespring
much do Note energy
sanding
a
1.7J
Unstoppable
a estimatethe
springconstantthesebuffersmusthavetostopthe
trainwithinism
mzoootons 2.109
v somph zz.am
i m
iii.i ii 2
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