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DINAMIKA
GAYA [Newton] Gaya Gravitasi (Berat)
Gaya Sentuh (Teanan ta!i" aya nor#a!"
aya ese$an)
%&K&M N'TN II
%&K&M N'TN I
%&K&M N'TN III DINAMIKA I (tan*a ese$an)
DINAMIKA II (+enan ese$an)
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, #
Bu#i
, *er-e*atan ravitasi
GAYA G.A/ITASI
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T'GANGAN TA0I
T
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GAYA N.MA0 1 GAYA G'S'KAN
N
23
Nfmaksimum =
, $oe3isien ese$an
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N
3
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4
N
3
T
T
5
Katro!
56 T
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4
N
3
T
T
5
Katro!
57 T
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%&K&M N'TN II
amF =
%&K&M N'TN I
konstanv0a0F ===
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8ontoh Soa! 594
Se:uah he!i$o*ter :er#assa 4;
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2
5
T
T
4
a
%u$u# Newton II *a+a tru$
N50400)4,18,9)(4500()ag(mT
aaaamgmTF
2
21222y
=+=+=
====
%u$u# Newton II *a+a he!i$o*ter
N218400)4,18,9)(15000(50400
)ag(mTF
aaaamgmTFF
1
21111y
=+=
++=
====
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8ontoh soa! 595
Se:uah *esawat ter:an #e#:uat !in$aran horisonta! +enan
$e-e*atan =< $#>?a#9 Gaya an$at yan +iteri#a o!eh *esawat
terse:ut arahnya tea$ !urus *a+a saya* *esawat9 Bi!a saya**esawat terse:ut #e#:entu$ su+ut =
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=
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8ontoh Soa! 59E
Se:uah :a!o$ :e#assa ; $ :erera$ $e atas +enan $e-e*atan
awa! /o*a+a :i+an #irin +enan su+ut Es
0
/4, s5
:era*a teanan +a!a# $a:e! se$aran C
awa:
a4, 5"= #>s5
T4, N T5, C
0i3t se+an turun 0i3t se+an nai$
a5, 4"5 #>s5
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T4, N
#
0i3t se+an turun
kg3,#
2,12
89mm2,1289
)4,28,9(m)ag(mT
ammgTF
1
1y
===
+=+=
==
T5, C0i3t se+an nai$
N3,80)2,18,9(3,#)ag(mT
ammgTF
22
22y
=+=+=
==
#
0atihan Soa! 5
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0atihan Soa! 5
Se:uah $a*a! ter:an #ainan :er#assa
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.
2
#
T
T sin
T -os
N2,10)6,0(#8,4)8,9)(#5,0(sinTmgF
N#8,4)8,0(24
)06,11)(#5,0(
!os
mVT
s/m06,11)24(60
4,4)28,6(f2t
2V6,030
18sin
8,030
24!osm241830
Vm!osTF
22
222
"
=+=+=
===
======
======
E
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0atihan Soa! E
Dua :uah :a!o$ yan #asin@#asin :er#assa 4 $ (se:e!ah $iri)
+an E $ (se:e!ah $anan) +i!eta$$an :er+a#*inan +i atas !antai
horisonta! +i#ana $oe3isien ese$an antara !antai +an :a!o$ 4 $a+a!ah
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,
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,
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N49,353,196,1F
s/m53,14
12,6
aa3a96,108,8
a3F08,8a96,1F
12
2
2112
=+=
==++=
+=+=
