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/ # # / Kata Kunci

# / N • bidang datar
• bidang miring
>2<2 , , • • gaya normal
gaya berat
5 $/& 1') , +! / # =:7D 36B86B2< F6BD:<2= <6 32G29 56?82? • • tegangan tali
katrol
A6B46A2D2? D6D2A B6CE=D2? 82H2 H2?8 36<6B;2 A252 36?52 252=29
#
# / #

# / N
>2<2 , ,

Contoh 5.12
$@<@ H2?8 >2CC2?H2 <8 36B5:B: 5: 52=2> C63E29 =:7D H2?8 C652?8 36B86B2< <6 2D2C
56?82? A6B46A2D2? > C $:<2 A6B46A2D2? 8B2F:D2C: E>: > C 36B2A2<29

82H2 D6<2? <2<: $@<@ A252 =2?D2: =:7D
4 !
6?82? >6?88E?2<2? $/0 + , 6 5:A6B@=69
#
<8 > C > C

(
$25: 82H2 D6<2? $@<@ A252 =2?D2: =:7D 252=29 (

Tes Kompetensi Subbab B

$/( ) ,* & # * + !2)2 * 1'& ,
,63E29 <@D2< 36B>2CC2 <8 D6B=6D2< 5: A6B>E<22? $:<2 A6B32?5:?82? 2?D2B2 # 52? # 252=29

=2?D2: =:4:? $:<2 <@D2< D6BC63ED 5:D2B:< 56?82? 82H2 9:DE?8=29 A6B46A2D2? 86B2< A252 <2DB@= D6BC63ED
C636C2B ( 36B2A2<29 <646A2D2? <@D2< D6BC63ED > C

,63E29 36?52 5:=E?4EB<2? @=69 $@<@ A252 3:52?8 E2 3E29 36?52 5:CECE? C656>:<:2? BEA2 C69:?882
>:B:?8 =:4:? $:<2 >2CC2 36?52 D6BC63ED <8 52? CE5ED D2>A2< C6A6BD: A252 82>32B 36B:<ED
<6>:B:?82? 3:52?8 D6B9252A 9@B:I@?D2= J 9:DE?8=29 $:<2 >2CC2 <8 52? >2CC2 <8 9:DE?8=29
<646A2D2? 36?52 C6D6=29 36B86B2< C
*6B92D:<2? 82>32B 36B:<ED A

B

D682?82? D2=: 52? A6B46A2D2? 36?52 <6D:<2 36?52
>6=E?4EB
,:D@BEC C652?8 36B5:B: 5: 52=2> =:7D H2?8 C652?8 36B
86B2< <6 32G29 56?82? A6B46A2D2? > C 6B2A2<29
m
1 82H2 D6<2? <2<: ,:D@BEC A252 =2?D2: =:7D
m
2

Dinamika Gerak 99