Page 90 - PRAKTIS BELAJAR FISIKA SMA KELAS XII

9%08%6- %7)5- %&

$36326+2 <+6+2 <+=> 4+@+,+8 A+81 :+6381 =/:+= .+8 5/;4+5+86+2 :+.+ ,>5> 6+=32+8 8.+
E1 25>41 25B=E1D1> ) 41> ) 25B:1B1; * C1DE

C1=1 <19> "9;1 :1B1; * 49E218 E218 7B169; H1>7 1 2 4 2 1
=5>H1D1;1> 8E2E>71> 71H1 9>D5B1;C9 ;54E1 =E1D1> 2
45>71> * 141<18 M 1 1
1 4 2 2 5
2 2 2
1
3
* * 2
2 5 #E1D =541> <9CDB9; 49 CE1DE D9D9; ( H1>7 49D9=2E<;1>
?<58 C52E18 =E1D1> ) 49 D9D9; 1C1< '
1B18>H1 =5>:1E89 ) :9;1 A @?C9D96 41> =5>E:E )
:9;1 ) >571D96
25B21>49>7 <1>7CE>7 45>71> )
3 * * 25B21>49>7 D5B21<9; 45>71> ;E14B1D :1B1; '(
1B18>H1 C1=1 45>71> 71H1 ?E<?=2 @141
=E1D1> ) 49 ( 29<1 ) @?C9D96 41> 25B<1G1>1>
45>71> 71H1 ?E<?=2 D5BC52ED 29<1 ) >571D96
(5B>H1D11> H1>7 25>1B 141<18 M
* 1 41>
E1 2E18 =E1D1> <9CDB9; C1<9>7 =5>?<1; 45>71> 2 41>
71H1 @141 :1B1; D5BD5>DE "9;1 :1B1;>H1 49:149;1> 3 41>
4E1 ;1<9 C5=E<1 71H1 D?<1;>H1 =5>:149 M 4
1 5 41>
1
4 E1 @1BD9;5< =1C9>7 =1C9>7 25B=E1D1> ) 41> ) H1>7

1 D941; 49;5D18E9 25C1B 41> :5>9C>H1 D5B@9C18 C5:1E8
2 (141 71B9C 8E2E>7 491>D1B1 ;54E1 =E1D1> D5BC52ED
2
3 2
4 D5B41@1D D9D9; ( H1>7 @?C9C9>H1 3 41B9 ) "9;1 ;E1D

5 =541> 49 D9D9; ( C1=1 45>71> >?< @5B>H1D11> H1>7
+52E18 25>41 25B=1CC1 25>1B 141<18
7B1= 41> 25B=E1D1> 1 ) 41> ) 141<18 =E1D1> =E1D1> H1>7 D941;

) 4971>DE>7 ) 3= ) C5:5>9C
;1> @141 C5ED1C D1<9 B9>71> 2 @?D5>C91< 49 D9D9; ( H1>7 49C5212;1> ?<58 ) 41>

H1>7 =1CC1>H1 41@1D ) C1=1

491219;1> ,5@1D 49 C525<18 ;1>1> 25>41 @141 :1B1; 3 @?D5>C91< 49 D9D9; ( C1=1 45>71> >?<
3= 49<5D1;;1> =E1D1> ) N H1>7 =5>H5212;1> 4 25C1B =E1D1> ) ;1<9 25C1B =E1D1> )

@?C9C9 25>41 =5>:149 C5@5BD9 @141 71=21B 5 25C1B =E1D1> ) ;1<9 25C1B =E1D1> )

E1 2E18 @1BD9;5< 41> =1C9>7 =1C9>7 25B
"9;1 P &= 41> 7 = C =E1D1> <9CDB9; 41> D5B@9C18 @141

D571>71> @141 D1<9 141<18 M :1B1; 3= "9;1 141<18 D9D9; H1>7 D5B<5D1; 49 1>D1B1
1 & 41> C545=9;91> C589>771 =541> 49 C1=1
2 & 45>71> <5D1; 41B9 141<18 M
3 & 1 3=
4 & 2 3=
5 & 3 3=
(141 D9D9; D9D9; CE4ED C52E18 @5BC579 4 3=
5
3=
45>71> @1>:1>7 25BDEBED DEBED 49D5=@1D;1>
=E1D1> ) ) ) 41> ) %E1D1> ) =5>71<1=9 B5CE<D1> (141 D9D9; D9D9; CE4ED 41> C52E18 @5BC579
49<5D1;;1> C52E18 @1BD9;5< 25B=E1D1> ) 71B ;E1D

71H1 41B9 =E1D1> <19> C525C1B ) =1;1 . =541> <9CDB9; 49 D9D9; >?< =1;1 49 D9D9; 81BEC
49<5D1;;1> C52E18 @1BD9;5< 25B=E1D1> C525C1B M
141<18 M

6/5=;9<=+=35+