97
Dinamika Gerak
252B2?82:2?C6A6BD:8232B36B:ED2CC236?5252?2C:?82C:?8852? 8 2CC22DB=52?D2=:5:232:2?
C
-6?DE2?A6B46A2D2?36?5252? D682?82?D2=:
4 :6D29E:
8
8
C 8 8 8
C C
25:A6B46A2D2?C6E236?52C22H2:DE
C 3 -:?;2E2?A25236?52
8
C 25:D682?82?D2=:
4 -:?;2E2?A25236?52
8
C N
8
C 25:D682?82?D2=:
Gambar 5.13
Dua benda dihubungkan dengan tali melalui dua katrol.
5. Gerak Benda Dihubungkan Tali Melalui Dua Katrol yang Salah Satunya Dapat Bergerak
252 B2?82:2? 36?52 52? 36?52 C6A6BD: + A6B46A2D2? 36?52 A252 2DB= 36B86B2 3632C 252=29 C6D6?829 52B:
N
N
Contoh
5.11
m
B
g
B A
m
A
g N
T T
T
licin
A6B46A2D2? 36?52 A252 2DB= D6D2A C69:?882 6BC222?
A6BC222?H2?836B=2EA252B2?82:2?D6BC63ED252=29C63282:36B:ED -:?;2E2?A25236?52
-:?;2E2?A25236?52 ,
N N
N
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98
Mudah dan Aktif Belajar Fisika untuk Kelas X
8 C
-:?;2E2?A25236?52 8
-:?;2E2?A25236?52 N
8
C N
8
C N
0 + ,52?0 + ,5:CE3CD:DEC:2?C69:?8825:A6B=69 8
8
C N
8 8
C
N8 8
8
C C
2B:0 + ,5:A6B=69 8
C
25:A6B46A2D2?36?52252=29
C 52?D682?82?D2=:252=29
6. Gaya Tekan pada Alas Lift
6B92D:2? +
,63E2932=36B2CC2D6B=6D25:52=2 =:7DH2?8C652?836B86B2 6?EBEDEE6GD?82H2D62?32=
A2522=2C=:7D,C2256?82?82H2?B2=36?52 2 1 , +
=:7D36B86B2F6BD:2=62D2C56?82?
646A2D2?D6D2A22B6CE=D2?82H2H2?8366B;2A25236?52252=29?=
, 22,,
3 1 , +
=:7D36B86B2F6BD:2=62D2C56?82? A6B46A2D2?D6D2A22B6CE=D2?82H2H2?8366B;2A25236?52252=29
22,, 4 1 , +
=:7D36B86B2F6BD:2=62D2C56?82?
A6B=232D2?N22B6CE=D2?82H2H2?8366B;2A25236?52252=29 N
N
A
B T
T T
m
A
= 3 kg
m
B
= 4 kg m
A
g
m
B
g
Gambar 5.14
Sebuah balok bermassa m terletak di dalam lift yang sedang bergerak.
a c
d
mg = w N
mg = w N
a v
mg = w a
N
w
v w
w v
b
mg = w N
a
w
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99
Dinamika Gerak
H2?82CC2?H2836B5:B:5:52=2C63E29=:7DH2?8C652?836B86B262D2C 56?82?A6B46A2D2?
C
:2A6B46A2D2?8B2F:D2C:E:
C 36B2A229
82H2D62?2:A252=2?D2:=:7D 4
6?82?6?88E?22?0 + ,
6
5:A6B=69 8
C
C 25:82H2D62?A252=2?D2:=:7D252=29
Tes Kompetensi Subbab
B
, +22 1 , ,63E29D236B2CC28D6B=6D25:A6BE22?
=2?D2:=:4:? :2D2D6BC63ED5:D2B:56?82?82H2 C636C2B36B2A229646A2D2?D2D6BC63ED
,63E2936?525:=E?4EB2?=69A2523:52?8 :B:?8=:4:? :22CC236?52D6BC63ED852?CE5ED
6:B:?82?3:52?8D6B9252A9B:I?D2=J9:DE?8=29 646A2D2?36?52C6D6=2936B86B2
C
6B92D:2?8232B36B:ED
m
1
m
2
:2A6B32?5:?82?2?D2B2 52?
252=29 9:DE?8=29A6B46A2D2?86B2A2522DB=D6BC63ED
C E23E2936?525:CECE?C656::2?BEA2C69:?882
D2A2C6A6BD:A2528232B36B:ED :22CC2852?2CC2
89:DE?8=29
D682?82?D2=:52?A6B46A2D2?36?526D:236?52 6=E?4EB
,:DBECC652?836B5:B:5:52=2=:7DH2?8C652?836B 86B2632G2956?82?A6B46A2D2?
C 6B2A229
82H2D62?2:,:DBECA252=2?D2:=:7D
N N
A
B
Contoh
5.12
22,
, 5 1 , +
=:7D36B86B2F6BD:2=632G2956?82?
A6B46A2D2?D6D2AB6CE=D2?82H2H2?8366B;2A25236?52252=29
22,
,
Kata Kunci
• bidang datar
• bidang miring
• gaya normal
• gaya berat
• tegangan tali
• katrol
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100
Mudah dan Aktif Belajar Fisika untuk Kelas X
66?82BE9: 6A6=2;2B:
, +
H2?8366B;2A252CE2DE36?5236C2B?H236B 32?5:?8=EBEC56?82?82H252?36B32?5:?8D6B
32=:56?82?2CC236?52 :BEEC2?56?82?
EE6GD?6?H2D22?329G2;:2 36?52A6BD226?86B;22?82H2A25236?52
65E236?5265E222?6?86B;22?82H2 A252 36?52 A6BD22 H2?8 36C2B?H2 C22
D6D2A: 2B29?H2 36B=2G2?2? :BEEC2? 56?82?
2C: B62C:
2H266?82BE9:86B236?52 ,2DE2?82H252=2,252=29?6GD?
,2DE ?6GD? 5:567:?:C:2? C63282: 82H2 H2?8636B:2?A6B46A2D2?
C
A252 CE2DE36?52H2?82CC2?H28
EE6GD?6?H2D22?329G2;:2 B6CE=D2?82H282H2H2?8366B;2A25236?52
C2256?82??=36?52D6BC63ED22?D6D2A 5:2 2D2E 36B86B2 =EBEC 36B2DEB2?
:BEEC2?56?82? EE 6GD? 6?H2D22? 329G2
A6B46A2D2? H2?8 5:D:3E=2? =69 82H2
D:3E=2B6?2
EE 6GD?
6?H2D22?
EE 6GD?
EE 6GD?
6?H2D22? 6?H2D22?
:2 36?5222?
K 5:2+2D2E K 36B86B2=EBEC36B2DEB2?
Peta Konsep Rangkuman
2H2
9E3E?82??H2
6B2
Setelah mempelajari bab ini, tentu Anda mem- peroleh manfaat, di antaranya Anda mengetahui bagai-
mana hubungan antara massa m, gaya F, dan percepatan a. Dapatkah Anda menyebutkan manfaat
Refleksi
lain Anda mempelajari bab ini? Dalam mempelajari bab ini, apakah ada materi yang Anda anggap sulit
untuk dipahami? Jika ada, diskusikan dengan teman atau tanyakan kepada guru.
2C:
N
B62C:
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101
Dinamika Gerak
0 0 12 4 ,5 ,. ,1. 1 , , . 22 1 , :236?5292?H25:A6?82BE9:=69C63E2982H236?52
22?36B86B256?82? 2 646A2D2??CD2?C62B2956?82?2B2982H2
3 646A2D2??CD2?36B=2G2?2?2B2956?82?2B29 82H2
4 A6B46A2D2??CD2?36B=2G2?2?2B2956?82?2B29 82H2
5 A6B46A2D2??CD2?C62B2956?82?2B2982H2 6 36?52D6D2A5:2
,63E2982H26?H63232?A6B46A2D2?
C A252
36?52H2?836B2CC28 :282H2:DE366B;2A252 36?52H2?836B2CC2882H2:DE22?636B:2?
A6B46A2D2?C636C2B 2
C
5
C 3
C
6
C 4
C
.?DE6A6B46A2D36?52H2?82CC2?H2852B: 646A2D2?
C6?;25:
CC6=22C5:A6B=E2?
82H2C636C2B 2
5 3
6 4
,63E2936?5236B2CC2
86=E?4EBA2523:52?8 :B:?856?82?646A2D2?D6D2A :2CE5ED6:B:?82?
JB6CE=D2?82H2H2?8366B;2A25236?52252=29 2
5 3
6 4
+6CE=D2?82H2A252C63E293:=H2?836B86B2=EBEC 36B2DEB2?5:;2=2?H2?86?52:252=29
2 C2256?82?82H2?B2= 3 C2256?82?82H236B2D3:=
4 C2256?82?2CC236?52 5 C2256?82?36B2D3:=5:EB2?8:82H2?B2=
6 ?= -:8232=52?5:=6D22?C656:2:?BEA2
36B:A:D5:2D2C3:52?852D2BC6A6BD:A2528232B B27:36B:ED6?E?;E2?9E3E?82?A6BA:?5292?
D6B9252AG2DE52B:5E236?52H2?82CC2?H2C22 H2?8 5:6B;22? =69 82H2
52? C69:?882
6?892C:=2?A6B46A2D2? 52?
2=5:C6?DE956?82?82H26?52D2BC69:?882 82H2D6BC63ED5:D6BEC2?=69636?5252?
C6=2?;ED?H2636?52 2H282H2D6BC63EDH2?8 6BEA22?A2C2?82?2C:B62C:252=29
2 52? 5
52? 3
52? 6 52?
4 52?
A B
C F
1
F
2
F
3
F
4
2B:8B27:52A2D5:C:AE=2?329G2 2
52? 3
52? 4
52? 5
52? 6
52? B27:A6B46A2D2?C63282:7E?8C:B6CE=D2?82H2A252
CE2DE36?52C6A6BD:A2528232B36B:ED
s 1
2
t
2CC236?52D6BC63ED252=29 2 8
5 8 3 8
6 8 4 8
6B52C2B2?EE6GD?52A2D5:C:AE=2? 329G2;:282H2H2?8366B;2A252C63E2936?52
36BD23292CC236?52D6BC63ED 2 36BEB2?852?A6B46A2D2?36BD2329
3 36BD232952?A6B46A2D2?36BEB2?8 4 D6D2A52?A6B46A2D2?36BEB2?8
5 D6D2A52?A6B46A2D2?36BD2329 6 36BD232952?646A2D2?36BEB2?8
,63E29D236B2525:2D2C3:= H2?8C652?836B86B2A6B92D:
2?8232B ,642B2D:32D:323:=
5:B6C69:?882 2 D222?D6D2A
5:2 3 D222?36B86B2
6C2A:?8 4 D222?36B86B26C2A:?82?2?
5 D236B86B26C2A:?8:B: 6 D236B86B2656A2?
2 6
5 10
ams
2
FN
F
Tes Kompetensi Bab 5
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102
Mudah dan Aktif Belajar Fisika untuk Kelas X
,63E2936?52D6B=6D2A2523:52?8:B:?8 2H2?B 2=A25236?52:DE252=29
2 C2256?82?36B2D36?52 3 =63:936C2B52B:A25236B2D36?52
4 =63:964:=52B:A25236B2D36?52 5 C2256?82?2CC236?52
6 C222D2E=63:964:=52B:A25236B2D36?52 6?52H2?82CC2?H25:D6A2D2?5:2D2C3:52?8
:B:?8H2?8=:4:?56?82?CE5ED6:B:?82? D6B9252A 3:52?8 9B:I?D2= :2 A6B46A2D2? 8B2F:D2C:
A6B46A2D2?H2?8D6B;25:A25236?52D6BC63ED252=29 2 C:?
5 C:?
3 C:? 6 4C
4 C:? ,63E2936?5236B2CC236B252A2523:52?8:B:?8
H2?8=:4:?56?82?CE5ED6:B:?82?JD6B9252A9B: I?D2= :2A6B46A2D2?8B2F:D2C:A6B46A2D2?36?52
252=29 2
5
8
3
8
6
8
4
8
6B92D:2?CECE?2?36?5236?5236B:ED ,63E293=236C:5:82?DE?82?A252=2?8:D=2?8:DC6A6BD:
A2528232B36B:ED
6C2B?H2A6B46A2D2?52?D682?82?D2=:36BDEBED DEBED
2
C 52? 5
C
52? 3
C
52? 6
C
52? 4
C
52? ,E2DE36?5236B2CC28D6B=6D2A2523:52?8:B:?8
56?82?6:B:?82?JD6B9252A9B:I?D2= 2H2?B 2=H2?8366B;2A25236?52252=29
2 5
3 6
4 ,63E2936?5236B2CC28D6B=6D2A2523:52?852D2B
5:D2B:56?82?82H2
F6BD:2=62D2C 2H2?B2= H2?8366B;2A25236?52:DE252=29
2 5
3 6
4
9 kg
1 kg
6?H2D22?D682?82?D2=:52?,6?H2D22?36B2D 3632? 2?86BEA22?A2C2?82?82H22C:B62C:
252=29 2
52?, 5
52? 3
52?, 6
52? 4
52? 6B52C2B2?CECE?2?36?5236?52A2528232B6;2
52?2DB=5:2?882A=:4:?C6AEB?2
:236?525:=6A2C2?D682?82?D2=:36C2B?H2 2
5 3
6 4
?:D236B2CC285:D:32?85:52=2=:7DH2?8 C652?86=E?4EB632G2956?82?A6B46A2D2?D6D2A
C :2
C
36B2D?:D25:52=2=:7D 252=29
2 5
3 6
4 2H2?B2=A2522:,:DBECH2?836B2525:52=2
=:7D=63:936C2B52B:A25236B2D?H2 2=:?:D6B;25:;:2=:7D 52=262522?
2 5:2 3 36B86B2632G2956?82?646A2D2?D6D2A
4 36B86B262D2C56?82?A6B46A2D2?D6D2A 5 36B86B2632G2956?82?A6B46A2D2?D6D2A
6 36B86B262D2C56?82?A6B=232D2?
A B
C T
T
2 kg 3 kg
3 kg
T
2
T
1
T
3
w
w
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103
Dinamika Gerak
4 .1 ,5 ,21, ,1. 1 ,63E2932=36B2CC285:D2B:=6982H26?52D2B
5:2D2C3:52?852D2B=:4:? 6B2A229A6B46A2D2? 32=D6BC63ED
,63E2936?5236B2CC2836B86B256?82?6 46A2D2?
C 6B2A22936C2B82H2A6B=2G2?2?H2?8
5:A6B=E2?282B36?52D6BC63EDD6A2D36B96?D:52B: D6A2DC6E=2
,63E2932=36B2CC286=E?4EBD2?A2646A2D2? 2G2=5:2D2C3:52?8:B:?8H2?8=:4:?C6AEB?2 :2
D2? 6BEA22?CE5ED6:B:?82?3:52?8
52?
C D6?DE2?
2 82H2?B2=A25236?52 3 A6B46A2D2?H2?8D:3E=A25236?52
4 ;2B2H2?85:D6AE9C6D6=29C E236?5252?5::2D2?A252E;E?8E;E?8D2=:
H2?85:C2?8ED2?A2522DB=C6A6BD:A2528232B 6B92D:2?CECE?2?8232B36B:ED
2CC265E236?522C:?82C:?8 852?
8
C ,E5ED6:B:?82?3:52?8
D6B9252A9B:I?D2=J :23:52?8=:4:?C6AEB?2 D6?DE2?
2 82H2?B2=A25236?52 3 2B2986B265E236?52
4 A6B46A2D2?86B265E236?52 5 D682?82?D2=:
6B92D:2?CECE?2?8232B36B:ED
A B
2CC252?2C:?82C:?8852?8 6;2 =:4:?C6AEB?22CC2D2=:52?2DB=5:232:2? :2
C D6?DE2?
2 A6B46A2D2?36?5252? 3 D682?82?D2=:?H2
2CC252?2C:?82C:?8852?8 ,E5ED3:52?8:B:?8D6B9252A9B:I?D2=J52?
C -6?DE2?
2 2B2986B236?52 3 A6B46A2D2?36?52
4 D682?82?D2=: E23E293=252?H2?82C:?82C:?82CC2?H2
85::2D56?82?D2=:52?5:82?DE?8A252=2?8:D =2?8:D=:7D :2=:7D36B86B262D2C56?82?A6B46A2D2?
C 36B2A2D682?82?C6D:2AD2=:
C
E236?5252?5::2D2?A252E;E?8E;E?8D2=: H2?85:C2?8ED2?A2522DB=C6A6BD:A2528232B
36B:ED
A B
30°
:52=2C63E29=:7D5:D6A2D2?D:32?82?3252? ,22D =:7D52=262522?5:26B:6?:32?83252??H2
C69:?8825:52A2D2?36B2D6B: :2
C D6?DE2?A6?E?;E2?D:32?82?;:2
2 =:7D36B86B2F6BD:2=62D2C56?82?A6B46A2D2? D6D2A
C
3 =:7D36B86B2F6BD:2=62D2C56?82?A6B=232D2? D6D2A
C
4 =:7D36B86B2F6BD:2=632G2956?82?A6B46A2D2? D6D2A
C
5 =:7D36B86B2F6BD:2=632G2956?82?A6B =232D2?D6D2A
C
,6C6B2?8H2?82CC2?H285:D:32?85:52=2=:7D H2?8C652?836B86B262D2C56?82?A6B46A2D2?D6D2A
C :2A6B46A2D2?8B2F:D2C:252=29
C
D6?DE2? 36B2DB2?8:DE5:52=2=:7D
2CC236?5252?2C:?8 2C:?8852?
8 2DB=
5:2?882A=:4:?C6AEB?2 :2 A6B46A2D2?8B2F:D2C:
C
D6?DE2? 2 2B2986B236?52
3 A6B46A2D2?86B236?52 4 D682?82?D2=:
A
A N
T
B m
A
g
m
B
g T
T B
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104
Mudah dan Aktif Belajar Fisika untuk Kelas X
Proyek
Semester 1
252C66CD6B:?:?52D6=296A6=2;2B:D6?D2?8?C6A52?AB:?C:A52C2B :?62D:252?5:?2:236?52D:D: .?DE6?:?82D2?A62922?6?86?2:
?C6AD6BC63ED?525:DE82C2?E?DE6=2E2?68:2D2?C66CD6BC642B2 36B6=ANB2?8 2?82968:2D2?H2?892BEC?52=2E2?5:EB2:2?
A252ABH6C66CD6B:?: ,63282:DE82C29:B68:2D2?6=A?5292BEC63E2D =2AB2?68:2D2?C66CD6BH2?822?5:AB6C6?D2C:2?5:29:BC66CD6B5:9252A2?
6=A=2:?52?8EBE :C:2?52 ,:CD62D:2A6?E=:C2?=2AB2??H2D6B5:B:2D2C E5E=-E;E2?=2D52?292?BC65EB6B4322?2D2?2=:C:C2D2C6BD2
6C:AE=2?52?,2B2?D6B9252AA6?6=:D:2?H2?8D6=295:=2E2?
Gerak Lurus Beraturan dan Gerak Lurus Berubah Beraturan
22 , 1 , 6A6=2;2B:C63E2936?52H2?836B86B2=EBEC36B2DEB2?52?36B86B2=EBEC36BE329
36B2DEB2? 1 , ,
2A2?=:?D2C2?
6=6B6?85:26D6B
L
4 6?882B:C2?;2?8
,
3E29 -EAE2?
2AEBDE=:C2D2ECA:5= -02- ,
,ECE?=292=2D2=2DC6A6BD:A2528232B36B:ED
-2?52:52?9:DE?8;2B22?D2B2D:D:2G2=D:D:52?D:D: 6A2C2?6=6B6?852B:D:D:9:?8826?86=:?5:?86D:D:6=2=E:D:D:
:DE?8G2DED6AE96=6B6?852B:6D:D:52?52B:D:D:6D:D: 1 1 ,2B2N36B:C2B2?D2B2N
452?;2B2N36B:C2B2?D2B2
N4 ,- , 1
2D2D=29;2B252?G2DED6AE9N52?N
A229A252=:?D2C2?N6=6B6?86?82=2:A6BE3292?646A2D2?:2H2 36B2A2
A2296=6B6?86?82=2:A6BE3292?646A2D2?A252=:?D2C2?N:2H2 36B2A2
6?EBEDA6?52A2D?52D6B2CE86B22A2296=6B6?8A252=:?D2C2?N 52?A252=:?D2C2?N
A2H2?852A2D?52C:AE=2?52B:A6B4322?:?: A
B C
Kelereng
Papan lintasan Tumpuan
Papan lintasan
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105
Tes Kompetensi Fisika Semester 1
0 0 12 4 ,5 ,. ,1. 1 , , . 22 1 , :6?C:82H2252=29
2 01010-1
N
5 01010-1
N
3 0101 0-1
N
6 01010-1 4 01
01
N
0-1
N
.C292C6D:2AC2DE2?G2DE6:=::5:6?C:C22 56?82?5:6?C:
2 6?6B8::?6D: 5 6?6B8:AD6?C:2=
3 52H2 6 82H2
4 D62?2? E2F6DB2C:?82C:?8C2DE2?52?C2DE2?C2DE
C22=2:?C2=:?8D682=EBEC ,6=:C:965E2F6DB D6BC63ED252=29
2
C2DE2? 5 C2DE2?
3 C2DE2? 6
C2DE2?
4 C2DE2? E2F6DB
52? C2DEC22=2:?636?DECE5ED
J +6CE=D2?F6DB636?DECE5EDJD6B9252A F6DB
:2F6DB F6DB
252=29 2
5 3
6 4
6D6=:D:2?2=2DEEBA6?882B:C;2?82CB?852? :B6D6BC6BEAC642B236BDEBEDDEBED252=29
2 52? 3 52?
4 5
52?
6 52? 252A6?8EEB2?A2?;2?836?525:A6B=6992C:=
A6?8EEB2? 2?H2?H22?82A6?D:?892C:= A6?8EEB2?D6BC63ED252=29
2 5E2 5 =:2
3 D:82 6 6?2
4 6A2D =E:?:EH2?82CC2?H2852?F=E6?H24
6:=::2CC2;6?:C 2
8
4
5
8
4 3
8
4
6
8
4 4
8
4
,63E293:=36B86B2632B2D56?82?646A2D2? CC6=2256D: 6E5:2?36?5236B86B2
632=:6D:EB56?82?646A2D2?
CC6=2256D: 646A2D2?B2D2B2D23:=252=29M
2
C 5
C
3
C 6
C
4
C 2B2H2?85:D6AE936?52C6=22C252=29
2 5
3 6
4 ,6C6B2?86?86?52B2:3:=56?82?A6B46A2D2?D6D2A
C ,6D6=2936B;2=2?
C3:=:DE6?6AE9;2B2
646A2D2?2G2=3:=:DE252=29 2
C
5
C 3
C
6
C 4
C
,63E293:=52B:62522?5:29:?88236B86B2 56?82?646A2D2?
C63EDE92?G2DEC
2B2H2?85:D6AE93:=252=29 2
5 3
6 4
,63E29 3:= 6:=:: 646A2D2? 2G2=
C 6?52A2DA6B=232D2?D6D2A
C
3:=D6BC63ED 22?36B96?D:C6D6=296?6AE9;2B2
2 5
3 6
4 ,63E2936?525:D6322?F6BD:2=62D2C56?82?
646A2D2?2G2=
C 6D:?88:2?36?52C6D6=29C 52B:A6?6322?252=29
C
2 5
3 6
4 :2?D2B2A6B?H2D22?36B:EDH2?8A2=:?8D6A2DE?DE
C63E2936?52;2DE93632C252=29 2 A6B46A2D2?D6D2A646A2D2?D6D2A
3 A6B46A2D2?36BD2329646A2D2?D6D2A 4 A6B46A2D2?D6D2A646A2D2?36BD2329
5 A6B46A2D2?36BD2329646A2D2?36BD2329 6 A6B46A2D2?52?646A2D2?36BEB2?8
6B:ED252=298B27:646A2D2?+D6B9252AG2DE 52B:36?52H2?836B86B2=EBEC
Tes Kompetensi Fisika
Semester 1
8 4
2 6 8
ts vms
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106
Mudah dan Aktif Belajar Fisika untuk Kelas X
,63E2936?5256?82?2CC2?H25:82?DE?856?82? C6ED2CD2=:6E5:2?D2=:5:D2B:62D2C56?82?A6B
46A2D2?D6D2A :2A6B46A2D2?8B2F:D2C:252=29
C D682?82?D2=:252=29
2 5 N
3 6 N
4
N 6B92D:2?8232B36B:ED
252=292DB=H2?8C2?82D=:4:? 2CC236?5252? 2C:?82C:?8852?8 :236?525:=6A2C
D682?82?D2=: 52?
2C:?82C:?8252=29 2
52?
5
52? 3
52?
6
52? 4 52?
,6C6B2?856?82?2CC285:D:32?85:52=2=:7D H2?8C652?86=E?4EB632G2956?82?646A2D2?
D6D2A
C :2
C 36B2DB2?8:DE252=29
2 5
3 6
4
v
t 2
1
6?5256?82?2CC2836B86B256?82?6=2;E2? ;2 2H2H2?85:A6B=E2?282B36?52:DE
36B96?D:A252;2B252B:D6A2DC6E=2252=29 2 36B=2G2?2?56?82?86B236?52
3 C62B2956?82?86B236?52 4 36B=2G2?2?56?82?86B236?52
5 C62B2956?82?86B236?52 6
C62B2956?82?86B236?52
,63E2936?5256?82?2CC28D6B=6D2A2523:52?8 52D2B 6?52 D6BC63ED 5:36B: 82H2
H2?8
636?DECE5EDJD6B9252A3:52?86?52D2B 2H2 ?B2=H2?8366B;2A25236?52:DE252=29
2 5
3 6
4 6B92D:2?8232B36B:ED
232BD6BC63ED6?E?;E2?8B27:646A2D2?D6B 9252AG2DE52B:5E23E2986B236?52H2?82CC2?H2
52? 65E236?526?52A2D82H2H2?8C22
C69:?8826?52A2D2?A6B46A2D2? 52?
2B: 8B27:52A2D5:C:AE=2?329G2
2 52?
3 52?
4 52?
5 52?
6 52?
A B
T
1
T
2
T
2
K
,6B2?8?6=2H2?6?H636B2?8:CE?82:6?88E?22? A6B29E52HE?8 6B29E52HE?8C6=2=E5:2B292?D682
=EBECD6B9252A2B292BEC2:B56?82?646A2D2?
C :2646A2D2?2=:B2?2:B
C9:DE?8=29646A2D2?
DD2=A6B29E52?2B29?H252=26=:?D2C:CE?82: ,63E2936?525:=6A2C2?D2?A2646A2D2?2G2=52B:
A6C2G2DH2?8C652?836B86B256?82?6=2;E2?D6D2A :2D:52252A6?82BE92?8:?;6=2C2?=293282:2?2
36?DE=:?D2C2?36?52D6BC63ED ,63E2936?52H2?82CC2?H2836B86B2C642B2
36B2DEB2?52=2=:?D2C2?6=:?82B56?82?646A2D2? C :2;2B:;2B:=:?82B2?:DE36B2A22982H2
82H2C6?DB:A6D2=?H2 6?82A229B2?8H2?8C652?86?2::A6B2:?2?
?D2?82?D:?8D:52D6BA6?D2=6=E2B=:?D2C2??H2 ,63E2932DE56?82?2CC2
85::2D56?82?D2=:52?
5:AED2BC69:?882=:?D2C2??H236B36?DE=:?82B2? F6BD:2=56?82?;2B:;2B: :2646A2D2?CE5ED
32DEB25
C52?
C D6?DE2?=29D682?82?D2=:
A252C22D32DE5:D:D:D6BD:?88: 4 .1 ,5 ,21, ,1. 1
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A. Cahaya B. Pemantulan
