mecÂnica dos sÓlidos (dinÂmica)- ensino mÉdio · t p w ' segundo watt joule 1 1 1 s w j 1...
TRANSCRIPT
![Page 1: MECÂNICA DOS SÓLIDOS (DINÂMICA)- ENSINO MÉDIO · t P W ' segundo Watt Joule 1 1 1 s W J 1 1 1 GW W W gigawatt MW W W megawatt kW W W quilowatt 9 6 3 1 1 .000 .000 .000 10 1 1](https://reader033.vdocuments.pub/reader033/viewer/2022041511/5e27dbf705c1826b8578f452/html5/thumbnails/1.jpg)
MECÂNICA DOS SÓLIDOS (DINÂMICA)- ENSINO MÉDIO
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F
d
4
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F
d
0S S
Sd
XF
XF Wd W
dFW X.F
XF
cos.FFX
cos..dFW5
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F
d
10cos0
1
1
md
NF
cos..dFW
1.1.1 mNW
mNJ .11 6
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7
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F
d
10cos0
1
1
cmd
dynF
cos..dFW
1.1.1 cmdynW
cmdynerg .11
8
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cmdyncmdynJmNJcmmdynN
.1010.1011.11 725
1001101 5
cmdynerg .11
ergJ 7101 9
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JeV 1910.6,11
10
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cos..dFWamF .
10coscos
damW ..
tv
a
dtv
mW ..
m
ssm
kgW 1.1/1
.1
Ts
Lm
Mkg
LTLMLTTL
MW ./../
. 2 22 MTLW
11
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cos..dFW0F
cos..0dW
0W
cos..dFW0d
cos.0.FW
0W12
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cos..dFW90
90cos..dFW090cos
0..dFW
0W
13
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atritoF
d
dF
14
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(1)
(2)
hd
gmPF
.0
cos..dFW
0cos... hgmW
hgmW ..10cos
15
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-A
Fx
Xf
Xi
16
xKFe .
xKFe . xKFe .
iF xxx
mola da deformação
.
xd
xkF
FF ELÁSTICAX
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17
xKFe .
xay .
Ka
xF
tga e
adjacente catetooposto cateto
xF
K e
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18
gráfico do área W
triângulodo área W
2b.h
W
xb
xkFh e
.
2)..( xxk
W
2. 2xk
W
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F
d
dFAhbAFhdb ..
dFW .
GRÁFICOÁreaWN
19
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20
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tWP
21
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tWP
segundoJouleWatt
111
sJW
111
gigawattWWGWmegawattWWMW
quilowattWWkW
9
6
3
10 000.000.000.11 10 000.000.11
10 10001
22
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23
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powerhorseWvaporcavaloW
746hp 1 735cv 1
24
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tWP
32 MTLP
dFW . tdFP
.amF . t
damP
..
tva
t
dtv
mP
..
Ts
Lm
Mkg
s
mssmkg
P1
1.1/1.1
T
LTTLM
P./.
25
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tWP
dFW . t
dFP
.
td
vmédia
médiavFP .26
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tWP
0
lim
t
tW
PdtdWP
27
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dtdWP
dSFdW . tdSFP
.
tdS
v
tâneainsvFP tan.
28
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dUT PPP
T
U
PP
100.T
U
PP
29
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30
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31
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F = 1 N d = 1 m
dF.Trabalho
32
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33
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34
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2
21mvEc
mghEp 2
2kxEp
35
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PCM EEE
2
21mvEc 2
2kxEp mghEp
36
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2
21mvEc
37
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F
d
10cos0
1v
2v
S
v38
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WEc WEcEc 0 WEc0EcEcEc 00 Ec
39
FdWFdWFdW 1º0cosº0 º0coscos
smaEcFdEcWEcSd
maFdFW .
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avv
s
savv
2
..220
2
20
2
2
21mvEc
40
smaEc avv
amEc.2
..20
2
00 v
20
.22
v
mEc
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mghEp41
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g
PF
42
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WEp
WEpEp 0
0EpEpEp
43
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WEp00 Ep
FdWFdWFdW 1º0cosº0 º0coscos
sgmEpFdEpWEpsd
mgPFFdW ..
mghEp44
hshshhh
h
0
0 0
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2
2kxEp
45
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WEpe
WEpEp ee 0
WEpe
0eee EpEpEp
00 eEp
46
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47
gráfico do área W
triângulodo área W
2b.h
W
xb
xkFh e
.
2)..( xxk
W
2. 2xk
W
2. 2xk
Epe
WEpe
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48
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JEJEp
EpEcEEc
M
M
1010010
0
0
0
JJEEp
EpEcEJEc
M
M
100100
10
JEJEp
EpEcEJEc
M
M
1064'6'
'''4'
finalinicial MM EE 0 ME
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Eph EcvEcEp CONVERTIDA
EphEcvEpEc CONVERTIDA
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GRANDEZA FÍSICA EQUAÇÕES UNIDADE DE MEDIDA (SI)
TRABALHO
TRABALHO DA FORÇA
PESO
TRABALHO DA FORÇA
ELÁSTICA
cos . .dFW (JOULE) . 11 mNJ
cmdynerg . 11
voltelétron
JeV
1910.6,11
hgmW .. (JOULE) . 11 mNJ
2
2kxW (JOULE) . 11 mNJ
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GRANDEZA FÍSICA EQUAÇÕES UNIDADE DE MEDIDA (SI)
POTÊNCIA
POTÊNCIA
INSTANTÂNEA
RENDIMENTO
tWP
dtdWP
(WATT) 111sJW
powerhorseWHPvaporcavaloWCV
746 1 735 1
médiavFP .
T
U
PP
100.T
U
PP
tâneainsvFP tan. (WATT) 111sJW
dUT PPP
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GRANDEZA FÍSICA EQUAÇÕES UNIDADE DE MEDIDA (SI)
ENERGIA CINÉTICA
ENERGIA POTENCIAL
GRAVITACIONAL
ENERGIA POTENCIAL
ELÁSTICA
ENERGIA MECÂNICA
(JOULE) . 11 mNJ
(JOULE) . 11 mNJ
(JOULE) . 11 mNJ
(JOULE) . 11 mNJ
2
21mvEc
mghEp
2
2kxEp
PCM EEE
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TEOREMA EQUAÇÕES OBSERVAÇÃO
PARA SISTEMAS
FÍSICOS
CONSERVATIVOS
(SEM ATRITO)
TEOREMA DA
ENERGIA
CINÉTICA
Quando variar apenas a velocidade.
TEOREMA DA
ENERGIA
POTENCIAL
Quando variar apenas a posição vertical/ ou o comprimento do sistema elástico.
TEOREMA DA
ENERGIA
MECÂNICA
Quando variar a velocidade e a posição vertical/ou o comprimento do sistema elástico.
PARA SISTEMAS FÍSICOS NÃO
CONSERVATIVOS
(COM ATRITO)
CEW
0CC EEW
PEW
0PP EEW
MEW
0MM EEW
ATRITO DE FORÇAM WEW
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