Page 143 - PRAKTIS BELAJAR FISIKA SMA KELAS XII

/$6 #.74
BEC 52? D682?82? =:CDB:< 3@=2< 32=:< >2C:?8 >2C:?8 52A2D 5:E<EB
>6?88E?2<2? 2>A6B6>6D6B 52? F@=D>6D6B >A6B6>6D6B 52? F@=D>6D6B
92?H2 >6?8E<EB ?:=2: 676<D:7?H2 ,63282: 4@?D@9 ;2BE> 2>A6B6>6D6B
>6?E?;E<<2? 2?8<2 "?: 36B2BD: 2BEC 676<D:7?H2 2D2E 2BEC
>2<C:>E>?H2 2 6>:<:2? AE=2 <6D:<2 ;2BE> F@=D>6D6B
>6?E?;E<<2? 2?8<2 / 36B2BD: D682?82? 676<D:7?H2 / 2D2E D682?82?
>2<C:>E>?H2 2 /
,6=2:? 2>A6B6>6D6B 52? F@=D>6D6B 2BEC 52? D682?82? =:CDB:< 3@=2<
32=:< 52A2D 5:E<EB >6?88E?2<2? @C:=@C<@A ".#"2 >6>A6B=:92D<2? C63E29
!70%(4 " @C:=@C<@A $6D:<2 5:8E?2<2? E?DE< >6?8E<EB 2BEC 2D2E D682?82? =:CDB:< 3@=2<
32=:< =2H2B @C:=@C<@A 2<2? >6>A6B=:92D<2? D2>A:=2? 86=@>32?8 2BEC 2D2E D682?82?
$0%$4 6?82? >6>A6B92D:<2? C<2=2 H2?8 52A2D 5:2DEB A252 A2?6= 56A2? @C:=@C<@A ?52
#;258;489 ;.+*0*2 *5*< 52A2D >6?6?DE<2? ?:=2: 2BEC 2D2E D682?82? >2<C:>E> 52? A6B:@56?H2 2B2
9.70=4=: *:=; 52;<:24 -*7 >6?6?DE<2? 36C2B2? 36C2B2? D6BC63ED D6=29 5:A6=2;2B: 5: $6=2C 1
<.0*70*7 52;<:24

BEC 3@=2< 32=:< >6?82=:B A252 A6?892?D2B >6>6?E9: A6BC2>222? i 20sin100 t
56?82? ! 52=2> 2>A6B6 52? + 52=2> C6<@? -6?DE<2?
2 2BEC >2<C:>E>
3 2BEC 676<D:7
4 2BEC B2D2 B2D2 52?
5 7B6<E6?C:?H2
"6"#
2 2?5:?8<2? A6BC2>22? ! C:? + 52? ! $ C:? + >2<2 2BEC >2<C:>E>?H2
252=29
$
3 BEC 676<D:7?H2 252=29
$

4 BEC B2D2 B2D2?H2 252=29

$

5 !2C:= A6B32?5:?82? A252 2 ;E82 5:A6B@=69 B25 C >2<2 7B6<E6?C:
2BEC?H2 252=29

!I

!2$/ (1*7$5$$1 + )!

&2+","/-") %* %"-". #5,5 -"4*)"/ /%"
6?6B2D@B >6>32?8<:D<2? % 3@=2< 32=:< 1
56?82? A6BC2>22? C:? + 56?82? V C:? t 52? V C:? t
2
2
1
52=2> F@=D 52? + 52=2> C6<@? -6?DE<2? 56?82? 52=2> F@=D 52? + 52=2> C6<@?
2 D682?82? 676<D:7 52? B2D2 B2D2 2 2>32B<2? 72C@B 52? 56?82? D:D:< D2?8<2A

3 7B6<E6?C: 52? A6B:@56 D682?82? 52? 5: D:D:< A252 <@@B5:?2D <2BD6C:EC
3 6B2A2 CE5ED H2?8 5:36?DE< @=69 <65E2 72C@B
4 D682?82??H2 C22D + C6<@?
3652 CE5ED 72C6 D6BC63ED
E2 3E29 CE>36B D682?82? 3@=2< 32=:< >6?892C:=<2? 4 #:<2 <65E2 72C@B :DE 5:;E>=29<2? 36B2A2 A2?;2?8
D682?82? >2C:?8 >2C:?8 >6>6?E9: A6BC2>22? B6CE=D2??H2

$:*4<2; .5*3*: 2;24* =7<=4 .5*; )