MECÂNICA DOS SÓLIDOS (DINÂMICA)- ENSINO MÉDIO · 13 v L.g .senT.tgT R L.senT Z.R L.g .senT.tgT...
Transcript of MECÂNICA DOS SÓLIDOS (DINÂMICA)- ENSINO MÉDIO · 13 v L.g .senT.tgT R L.senT Z.R L.g .senT.tgT...
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MECÂNICA DOS SÓLIDOS (DINÂMICA)- ENSINO MÉDIO
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cpcp amF .
Rv
acp
2
Rv
mFcp
2
.
Rv .
RR
mFcp
2).(.
RmFcp .. 2angular velocidadeω
al tangencivelocidadev
4
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P
0N
NPFR
CPR FF NPFCP
0N
Rv
mFCP
2
.
gmP .
mgRv
m 2
gRv .
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CPR FF
ATR FF ATCP FF
NFAT
NRv
m 2
gRv ..
gmP
PN
.
gmRv
m 2
Rv
mFCP
2
.
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PF
tg CP
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XP
YP
N
P
CPF
PF
tg CP
gmP Rv
mFCP
2
.
gmRv
mtg
2
gRv
tg1
.2
tgg Rv
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L
R
gmP Rv
mFCP
2
.
gmRv
mtg
2
gRv
tg1
.2
PF
tg CP
T
CPF
P
LR
sen
gsenLv
tg..
2
tgsengLv ...
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tgsengLv ...
senLR .
tgsengLR ....
tgsengLsenL .....
senL
tgsengL
.
...
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N
CPF
P
R
CPR FF
PNFR PNFCP
Rv
mFCP
2
.
Rv
mPN2
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N
CPF P
R
CPR FF
NPFR
NPFCP
Rv
mFCP
2
.
Rv
mNP2
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acp
acp
acp
acp
v v
v v
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tvoltasN
f
º
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Tf
1
fT
1OU
T f
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RfvTR
vts
vT
fTtRs
2
212
TR
v2
Rfv 2
ts
v
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fTt T
fTt
22
12
T
2
f 2
t
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RvRfv f 22
f 2Rfv 2
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Rv .Rv
acp
2
RR
acp
22
Racp2
acp
acp
acp
acp
v v
v v
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C
B
A
'v
v
vvv'
ϴ vvv'
vvv '
v
'v
v
ϴ RR
S
ϴ
A B
tvStS
v
RS
vv
Rtv
vv
.Rvv
tv .
Rv
aN
2
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Fcp
Fcp
Fcp
Fcp v
v
v
v
Rv
acp
2
cpcp maF Rv
mFcp
2
Racp2
RmFcp2
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0
0
ttss
vts
v
tss
vt
ssv
ttss
v t00
0
0
000
00 ssvtssvt
vtss 0
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0
0
ttt
tttt t00
00
0
00
00 tt
t 0
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Srad
RradERÁCORRESPOND
ECORRESPOND
)(
)1(
RradSrad .)(.)1(
RS
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RS . .RS
tR
tS
.
t
tS
v
Rv
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32 BA vv
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BBAABBAARfvBA RfRffRfRvv 222
A
B
B
A
RR
ff
R f
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A B
RA RB
BA
BA
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BABAfBA ffff 222
BA ff
R v
B
B
A
A
Rv
RvBA R
vRv
B
A
B
A
RR
vv
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FORMA LINEAR
FORMA ANGULAR
TRANSMISSÃO DO MCU
POR CORREIA OU RODA DENTADA POR EIXO
tvoltasN
f
º
Tf
1
fT
1
TR
v2
Rfv 2
T
2
f 2 Racp
2
Rv
acp
2
vtss 0
Rv
mFcp
2
RmFcp2
t 0
RS
BA vv A
B
B
A
RR
ff
BA BA ff B
A
B
A
RR
vv
36
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GRANDEZA FÍSICA EQUAÇÕES UNIDADE DE MEDIDA (SI)
FORÇA CENTRÍPETA
FORÇA CENTRÍPETA NO
GLOBO DA MORTE
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cpcp amF .
Rv
mFcp
2
.
RmFcp .. 2)(
/1 . 11 2
Newton
smkgN
)(
/1 . 11 2
Newton
smkgN
gRv . )/(
/
segundometro
sm
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GRANDEZA FÍSICA EQUAÇÕES UNIDADE DE MEDIDA (SI)
FORÇA CENTRÍPETA EM
CURVA NÃO INCLINADA
FORÇA CENTRÍPETA EM
CURVA INCLINADA
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gRv ..
tgg Rv
)/(
/
segundometro
sm
)/(
/
segundometro
sm
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GRANDEZA FÍSICA EQUAÇÕES UNIDADE DE MEDIDA (SI)
FORÇA CENTRÍPETA EM
PÊNDULO CÔNICO
tgsengLv ...
senL
tgsengL
.
...
sm/
srad/
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GRANDEZA FÍSICA EQUAÇÕES UNIDADE DE MEDIDA (SI)
FORÇA CENTRÍPETA EM
DECLIVE
FORÇA CENTRÍPETA EM
ACLIVE
FORÇA CENTRÍPETA EM
ROTOR
41
Rv
mPN2
Rv
mNP2
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GRANDEZA FÍSICA EQUAÇÕES UNIDADE DE MEDIDA (SI)
PERÍODO
FREQUÊNCIA
RELAÇÃO ENTRE
FREQUÊNCIA E
PERÍODO
VELOCIDADE LINEAR
VELOCIDADE
ANGULAR
RELAÇÃO ENTRE
VELOCIDADES LINEAR
E ANGULAR
42
T = Constitui o intervalo de tempo
necessário para que se complete
uma volta (360º). s
f = Expressa o números de voltas
completas na unidade de tempo. 1 shertzHz
tvoltasN
f
º
Tf
1
fT
1
TR
v2
Rfv 2 sm/
T
2
f 2 srad/
Rv
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43
GRANDEZA FÍSICA EQUAÇÕES UNIDADE DE MEDIDA (SI)
ACELERAÇÃO
CENTRÍPETA
FUNÇÃO HORÁRIA
LINEAR
FUNÇÃO HORÁRIA
ANGULAR
TRANSMISSÃO DO MCU
POR CORREIA
TRANSMISSÃO DO MCU
POR EIXO
Racp2
t 0
RS
Rv
acp
2
vtss 0
2/sm
BA vv A
B
B
A
RR
ff
BA BA ff B
A
B
A
RR
vv
RELAÇÃO ENTRE
POSIÇÃO LINEAR (s) E
VELOCIDADE
ANGULAR (ϴ)
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