Mudah dan Aktif Belajar Fisika untuk Kelas XI
84
,52D18;511:1CD82521B41A9;5C97791=5C5A 9;1 =1BB1 2D18 ;511 ;7 41
=B C5CD;118;5351C12D18;511B11C=53119
;5C97791=5C5A41A9C1184155A79;95C9;2D18 ;511B5B11CB525D==53119C118
,52D18;5A5C1=55F1C99C1B1 ++,-+4571
491=5C5A=
71A;5A5C1411C=59C1B4571 1=1 C5CD;118 ;5351C1 =99=D= ;5A5C1
C5AB52DC ,52D18 2541 25A=1BB1 ;7 :1CD8 2521B 41A9
;5C97791=5C5A491C1BC118
9;1 =B
C5CD;118 1
;5351C12541B11CC92149C11841 2
DB181?5871H125A1CB51=15A94181 ,52D185DAD49C5=21;;1=9A97;51C1B4571
BD4DC55E1B9J4155A79;95C9;B525B1A 9;1
=B C5CD;11855A79;95C9;4155A79
?C5B912541141B11C=53119C9C9;C5AC9779
D. Daya
41 C518 251:1A C5C17 31A1 =5789CD7 DB181 41A9 71H1 H17 491;D;1
921497;1 =575C18D9 25B1A DB181 5298 =51A9; =575
C18D9 B525A11 1:D DB181 C5AB52DC 49;5A:1;1
-5CDH1 25B1A1 F1;CD 49 411= 2181B1 99 =5:149 B171C 25A5A1
,11C DB181 5A B1CD1 F1;CD
4945699B9;1 =D3D18 9BC918 41H1
5AD41971C218F141H1C941;49C5CD;1?5825B1A55A79H17 49=99;9 BD1CD 2541
.CD; 5298 =5=181=9H1 5A81C9;1 3?C?8
25A9;DC
.3?; 41 DC5C 25A=1BB1 B1=1 H19CD ;7 =519;9 1C19 4D1 B5;?18H1 B5C9779 =5C5A
54D1H1 =5=99;9 55A79 B1=1 25B1A DCD;
=51;D;1DB181
:?D5
5A79?C5B91H1749=99;9=5A5;1B1=1 F11DD;5H1C11H1.3?;B1=19491C194D15298351C
1A9DA191
3?C?8 C5AB52DC 49;5C18D9 218F1 1AC9H1 DB181 25D= 411C =5=25A9;1 96?A=1B9529857;1C5C175A941811;921C571AD871H1
11=
5A9BC9F1 99 411C 49;1C1;1 218F1 .3?; =5=99;9 41H1 5298 25B1A 41A9141 DC5C F11DD ;54D1H1 =5=99;9 ;5=1=D1 DCD; =57
81B9;1 55A79 H17 B1=1
149 41H1 14118 25B1A1 69B9;1 H17 =5H1C1;1 DB181 H17 491;D;1 ?58 2541 B5C91 B5;?H1 1C1D 1:D 55A79 H17 492DCD8;1
2541 B5C91 B5;?H1 1H1 A1C1 A1C1
DB181 B517F1;CD
-
1C1D
, -
K 5C5A171
DB181 H17 491;D;1 :?D5 - F1;CD H17 495AD;1 B5;?
;51:D1 A1C1 A1C1 =B 11=B9BC5=,B1CD141H149CDAD;141A9B1CD1DB181H19CDB
,1CD1 C5AB52DC B5A97 49B52DC F1CC 49C5C1;1 B521719 5781A711 C5A8141 9=DF1 ,;?C1491 H19CD 4 55
K
,1CD1 41H1 411= ;5=1=D1 B52D18 =5B9 291B1 =577D1;1 B1CD1
+, 0+ 1C1D 41H1 ;D41 8F1CC;0
;08
;0
:1=N
Tugas Anda 3.4
Sebutkan contoh alat-alat yang mencantumkan besaran daya yang ada
di sekitar Anda.
Usaha, Energi, dan Daya
85
+9C?H1725A=1BB1;7=519;9C1771;51C19C971B5C9779
=B51=1=59C 5A11;1841H1A1C1 A1C1H17491;D;1+9C?
8
9;5C18D9 ;7
= -=59C
- -
;7
=B =
B
F1CC 149+9C?=575D1A;141H1B525B1AF1CC
,52D18=5B9?=1B5CA96D71411C=5=9418;1;719A;521;H17C9779H1 =5C5AB51=1=59C
9;1569B95B9=5B9?=1C5AB52DC81H125A11;18
41H1A1C1 A1C19BCA9;H17495AD;1 8
9;5C18D9 ;7
= - =59C
B
1H1H17495AD;1DCD;=5=9418;119A14118
- -
;7
=B =
B
F1CC 1H1H17495AD;1?=1DCD;=5=5A?58DB181B525B1A
F1CC4571
569B95B9=5B914118 F1CC
F1CC F1CC
14941H1?=1171A569B95B9H181ADBB525B1AF1CC
Contoh
3.15
Contoh
3.16
;08 14118 B1CD1 DB181 1C1D 55A79 2D;1 B1CD1 41H1
,1CD1 C5AB52DC21H1;497D1;1DCD;=5H1C1;155A799BCA9;
9;1B5CA9;1
9BCA9; =5=99;9 41H1 F1CC 55=5 B5CA9;1 C5AB52DC 55A79 9BCA9; =51;D;1 ;5A:1 1C1D DB181 :?D5 B5C91 B5;?H1
Mudah dan Aktif Belajar Fisika untuk Kelas XI
86
Tes Kompetensi Subbab
D
3,-0..6-6.5+0 +9?=519;9C1771H17C9779H1=411=F1;CD
45C9;
9CD71841H1A1C1 A1C1+9?411=B1CD1 :9;1=1BB1H1;7
=B
,52D18?=1=5B94975A1;;1?58=?C?A9BCA9;H17 =5=99;941H1
5B9C5AB52DC1;1=519;;1 2521;7;5C5=1CH17C9779H1
=
9CD718
F1;CD H17 492DCD8;1 DCD; =519;;1 2521 C5AB52DC
,52D18=?29=577D1;1=5B9 5A1171H1
A1C1 A1C1H174925A9;1=5B9=?29C5AB52DC171A411C 25A75A1;4571;5351C1;?BC1;=:1=
,52D1821?;25A=1BB1;725A141411=;51411 491=491C1B29417=9A97
1?;C5AB52DC=5411C
71H1B525B1A
B51A1829417=9A97;51C1B
1 -5CD;1;5351C121?;B5C518=55=D8
:1A1; ,=B51:1729417=9A97
2 9CD741H1H174925A9;1?5871H1
,=
=B BD4DC29417=9A97J
,52D18=5B9?=1411C=5=9418;1;719A ;5B52D1821;H17C9779H1
=B51=1
=59C
9;1569B95B9=5B9?=19925A11;1841H1 9BCA9;H17495AD;1
?125A=1911D3DA49;5C97791=5C5A41A9 1C19
9;1;5351C1?11411F15D3DA1=B
25A11;18;5351C1H1;5C9;1=5H5CD81C19 1A9;5C97791=B52D18;511H17=5=99;9
=1BB1 ;7 :1CD8 41A9 ?8?
5A11;18 55A79 ;95C9; H17 49=99;9 ;511 141 B11C =53119
;5C97791
=491C1BC118 =B
,52D182541H17=1BB1H1;725A75A1;4571 ;5351C1C5C1=B
5=D4912541C5AB52DC4925A9
71H1 B589771 2541 =5711=9 5A1=21C1 ;5=D49125A85C9B5C518=55=D8 :1A1;
=
-5CD;1 1
25B1A71H1575A5=1H1725;5A:11412541 2
DB181H17491;D;125418977125A85C9
m = 2 kg
F 30°
Rangkuman
.B181 14118 25B1AH1 71H1 B51A18 5A
94181B49;19457125B1AH15A94181 3?B
,1C1D,3?B 4571
14118 BD4DC 1C1A1 71H1 41 5A94181
.B18125A81A71571C96=5D:D;;1218F171H1 H1725;5A:125A1F1145711A185A94181
1417A169;71H1C5A81415A9418125B1ADB181 =5AD1;1D1B415A18H17491AB9A
5A79 14118 ;5=1=D1 DCD; =51;D;1 DB181
5A79;95C9;1411855A79H1749=99;9
?58B5C912541H1725A75A1; 5A79?C5B911411855A79H1749=99;9?58
B5C912541;1A51;54D4D;1H1
9;1;51411 =5=D7;9;155A79C5AB52DC411C49=D3D;1
DCD;55A79?C5B917A1E9C1B9
51BC9B
1 DCD;55A79?C5B91571B
.B181 =5AD1;1 5AD2181 55A79 41A9 BD1CD 2541
4 DCD;55A79;95C9;
4 DCD;55A79?C5B91
D;D= 5;5;11 5A79 5;19; L9;1 141 BD1CD B9BC5= H17 25;5A:1 81H1 71H1 71H1
;?B5AE1C9655A79=5;19;B9BC5=B51DC5C1
M 4
;?BC1
W
total
= W
1
+W
2
W
1
F
s W
2
