Page 129 - MUDAH DAN AKTIF BELAJAR FISIKA SMA KELAS X

Contoh 6.6
1<1= B52D18 5;B@5A9=5> D>CD; =5>5>CD;1> ;535@1C1> 3181H1 49 41<1= 19A B5?A1>7
(a)
B9BF1 =5<5F1C;1> B525A;1B 3181H1 ;5 41<1= 19A 45>71> BD4DC 41C1>7 J $5=D491>
i B9BF1 =5>31C1C BD4DC 291B H1>7 C5A:149 49 41<1= 19A C5A>H1C1 25B1A>H1 J #9;1 ;535@1C1>

n 3181H1 49 D41A1 491>771@ M = B C5>CD;1> ;535@1C1> 3181H1 49 41<1= 19A
1
$9$%
n
n <n 2 9;5C18D9
1 2
r & J M = B . J

2 49 19A B9> r
(b) B9> &

M = B M

B9> J = B
i
B9> J

M = B
n
1
#149 ;535@1C1> 3181H1 41<1= 19A 141<18 M = B

n
n >n 2
1 2
r ,521719 ;?>B5;D5>B9 41A9 !D;D= " ,>5<<9DB 9>9 B9>1A 41C1>7 41A9
=549D= ;DA1>7 A1@1C ;5 =549D= <5298 A1@1C + + /&+ . ( + !& & /( +

Gambar 6.22 *"+!"( 0& $ .&/ +,.* ) ! + '&( /&+ . ! 0 +$ ! .& *"!&1* )" &% . - 0 (" *"
Sinar datang dibiaskan: !&1* (1. +$ . - 0 + + B9>1A 1;1> 49291B;1> =5>:1D89 71A9B >?A=1<
(a) mendekati garis normal jika n < n ;
1 2 (4+$6,.$1 $0%$4
(b) menjauhi garis normal jika n > n .
1 2
Contoh 6.7

,55;?A 9;1> 25A141 49 41B1A ;?<1= H1>7 41<1=>H1 = + B5@5AC9 C1=@1;
n = 1 19A
@141 71=21A 49 B1=@9>7
ud
)141 ;541<1=1> 25A1@1;18 <5C1; 9;1> 41B1A ;?<1= C5AB52DC C5A<981C ?<58 @5>71=1C
4 41A9 @5A=D;11> 19A :9;1
n =
4 m air 3 1 9;1> 49<981C @5>71=1C B531A1 C571; <DADB
2 BD4DC 1>C1A1 =1C1 41> 71A9B >?A=1< B525B1A J
$9$%
dasar kolam 1 )5A81C9;1> 71=21A
#9;1 @5>71=1C =5<981C 9;1> B531A1 C571; <DADB 1;1> =5=5>D89 @5AB1=11>
C1> . B9> . 41> C1> & B9> &
C1>& B9>& ! + !
,9>1A 41C1>7 41A9 9;1> B589>771 1C1D 1! =1;1
C1>. B9>. ! + &. !
!
;541<1=1> 9;1> 49@5A?<58 H19CD 1C1D ! =

#149 ;541<1=1> B5=D 9;1> H1>7 49<981C @5>71=1C B531A1 C571; <DADB 141<18 =
2 $541<1=1> 9;1> D>CD; BD4DC 1>C1A1 =1C1 @5>71=1C 41> 71A9B >?A=1< . J
mata
pengamat 141<18
B9> & + B9> &
1!
B9> . + B9>
r &.

B9> & B9> J

r
& J
i d '
d = 4 m
i C1> & ! C1> J !
B589>771 =
C1> . ! C1> J
#149 ;541<1=1> B5=D 9;1> D>CD; BD4DC . J =5>:149 =

120 Mudah dan Aktif Belajar Fisika untuk Kelas X