laporan

BAB IV PENGUMPULAN DAN PENGOLAHAN DATA

BAB IV PENGUMPULAN DAN PENGOLAHAN DATA

BAB IVPENGUMPULAN DAN PENGOLAHAN DATA4.1 Pengumpulan Data4.1.1 Pengukurn Dasara. Benda kerja 1 (BK-1) : KUNINGAN

1. Mengukur dengan Jangka SorongTabel 4.1 Mengukur Kuningan dengan Jangka Sorong

BagianPanjang(P)Lebar (L)Tinggi/tebal(T)

145 mm25 mm17,6 mm

245 mm25 mm17,6 mm

345 mm25 mm17,6 mm

445 mm25 mm17,6 mm

545 mm25 mm17,6 mm

225 mm125 mm88 mm

45 mm25 mm17,6 mm

10125 mm23125 mm21548,8 mm2

50625 mm215625 mm27744 mm2

Volume BK-1 (V) =

= 45 mm x 25 mm x 17,6 mm

= 19800 mm3

2. Mengukur dengan mikrometer sekrupTabel 4.2 Mengukur Kuningan dengan Mikrometer Sekrup

BagianTinggi/tebal (T)

(mm)

117,58 mm

217,58 mm

317,58 mm

417,58 mm

517,58 mm

3. Menimbang dengan neraca teknis

Massa BK-1 (m1) = 163 gram

b. Benda kerja 2 (BK-2) : TEMBAGA

1. Mengukur dengan Jangka SorongTabel 4.3 Mengukur Tembaga dengan Jangka Sorong


145 mm25,1 mm17,6 mm

245 mm25,1 mm17,6 mm

345 mm25,1 mm17,6 mm

445 mm25,1 mm17,6 mm

545 mm25,1 mm17,6 mm

225 mm125,5 mm88 mm

45 mm25,1 mm17,6 mm

10125 mm23150,05 mm21548,8 mm2

50625 mm215720,25mm27744 mm2

Volume BK-2 (V) =

= 45 mm x 25,1 mm x 17,6 mm

= 19879,2 mm3

2. Mengukur dengan mikrometer sekrupTabel 4.4 Mengukur Tembaga dengan Mikrometer Sekrup


(mm)

117,54

217,54

317,54

417,54

517,54


Massa BK-2 (m2) = 176,2 gram

c. Benda kerja 3 (BK-3) : BESI

1. Mengukur dengan Jangka SorongTabel 4.5 Mengukur Tembaga dengan Jangka Sorong


145,1 mm25,1 mm17,6 mm

245,1 mm25,1 mm17,6 mm

345,1 mm25,1 mm17,6 mm

445,1 mm25,1 mm17,6 mm

545,1 mm25,1 mm17,6 mm

225 mm125,5 mm88 mm

45,1 mm25,1 mm17,6 mm

10170,05 mm23150,05 mm21548,8 mm2

50850,25 mm215720,25mm27744 mm2

Volume BK-2 (V) =

= 45,1 mm x 25,1 mm x 17,6 mm

= 19923,376 mm3

2. Mengukur dengan mikrometer sekrupTabel 4.6 Mengukur Tembaga dengan Mikrometer Sekrup


(mm)

117,57

217,57

317,57

417,57

517,57


Massa BK-2 (m2) = 155,5 gram

4.1.2 PESAWAT ATWOOD MODERN DAN KONVENSIONAL Pesawat Atwood Konvensional Percobaan GLB

Beban m1 = 0,0835 kg


r katrol= 0,00625 m a. Percobaan 1Beban m3 = 0,004 kg

NoJarak A-B (m)Waktu (detik)Kecepatan (m/s)

10,42,560,15625

20,62,810,21352

30,83,460,23121

413,900,25641

b. Percobaan 2

Beban m3 =0,006 kg

NoJarak A-B (m)Waktu (detik)Kecepatan (m/s)

10,41,620,24691

20,62,090,28708

30,82,560,3125

412,840,35211

Percobaan GLBB

a. Percobaan 1

Beban M3= 0,004 kg

Jarak A-B= 0,5m

NoJarak B-C (m)Waktu (detik)Kecepatan (m/s)Percepatan (m/s2)

10,20,250,057360,22947

20,30,620,142270,22947

30,40,870,199630,22947

40,51,180,270770,22947

b. Percobaan 2

Beban m3= 0,006 kg

Jarak A-B= 0,5m

NoJarak B-C (m)Waktu (detik)Kecepatan (m/s)Percepatan (m/s2)

10,20,180,061240,34023

20,30,400,136090,34023

30,40,750,255170,34023

40,51,030,350430,34023

Pesawat atwood modern



r katrol= 0,00625 m Percobaan GLB

a. Percobaan 1M3= 0,01kgNoJarak A-B (m)Waktu (detik)Kecepatan (m/s)

10,40,1123,57142

20,60,1145,26135

b. Percobaan 2

M3= 0.02kgNoJarak A-B (m)Waktu (detik)Kecepatan (m/s)

10,40,0775,19480

20,60,0678,95522

Percobaan GLBB

a. Percobaan 1

M3 = 10gr

Jarak A-B = 0,5 mNoJarak (m)Waktu (s)Kecepatan (m/s)Percepatan (m/s2)

10,20,0640,073710,55432

20,30,0750,106410,55432

b. Percobaan 2

M3

= 0,02 kgJarak A-B = 0,5 m

NoJarak (m)Waktu (s)Kecepatan (m/s)Percepatan (m/s2)

10,20,0640,073711,040919

20,30,0750,105681,040919

4.1.3 Modulus Elastisitas Batang I ( Kecil )

Panjang Tumpuan L0 = 950 mm

Daerah

PengukuranPanjang Batang (mm)Lebar (b) (mm)Tebal (h)

(mm)Luas Penampang (A)

(mm2)

I10009,99,998,01

II10009,89,593,1

III10009,79,693,12

IV10009,79,996,03

V100010,09,797,0

P = 1000 b = 9,82 h = 9,74A = 95,45

Tabel data pengamatan :Jumlah Beban (kg)Kedudukan G

Pada PenambahanPada PenguranganRata - rata

0,0000

0,5555

1,0101010

1,5151515

2,0101010

2,5242424

3,0292929

3,5343434

4,0393939

Batang II ( Sedang )Panjang Tumpuan L0 = 900 mm

Daerah



(mm)

I100021,19,9208,89

II100021,39,6204,48

III100020,89,6199,68

IV100021,49,8209,72

V100021,09,8205,8

P = 1000 b = 21,12 h = 9,74A = 205,714

Tabel data pengamatan :

Jumlah Beban (kg)Kedudukan G


0,0000

0,5555

1,0999

1,5141414

2,0181818

2,5232323

3,0282828

3,5323232

4,0373737

Batang III ( Besar )Panjang Tumpuan L0 = 850 mm

Daerah



(mm)

I100016,516,5272,25

II100016,016,4262,4

III100015,316,6253,98

IV100017,416,5287,1

V100017,216,6285,52

P =1000b = 16,48 h = 16,52A = 272,25

Tabel data pengamatan Jumlah Beban (kg)Kedudukan G


0,0000

0,5111

1,0222

1,5333

2,0444

2,5555

3,0666

3,5777

4,0888

4.1.4 Bandul Sederhana dan Resonansi Bandul Sederhana Tabel 1 Hubungan antara T dan l, m dibuat tetapMasa Bola Bandul35 Gram

Panjang Bandul0,20 m0,40 m0,60 m

Waktu Untuk 20 Ayunan19,4 s26,7 s31,6 s

Perioda T0,97 s1,335 s1,58 s

T2 (s2)0,94091,78222,4964

Tabel 2 Hubungan antara T dan m, l dibuat tetapPanjang Bandul0,60 m

Massa Bola Bandul35gr70gr

Waktu Untuk 20 Ayunan31,6 s32 s

Perioda T1,58 s1,6 s

T2 (s2)2,49642,56

Tabel 3 Hasil pengamatan resonansi bandul sederhana

m=70grPanjang BandulPerioda T0Perioda Trf0fr

50 cm1,41 s1,42 s0,709 Hz0,704 Hz

25 cm10,1 s1,085 s0.990 Hz0,921 Hz

4.1.5 Resonansi Pada Pegas HelikPegas Helik 4,5 N/M

Massa

(gram)Periode T0(s)Periode Tr

(s)F0(Hz)Fr

(Hz)

1001,0621,0390,9410,962

2001,3351,3170,7490,759

Pegas Helik 25 N/M

Massa

(gram)Periode T0(s)Periode Tr

(s)F0(Hz)Fr

(Hz)

1000,5250,53751,9041,860

2000,66650,6891,51,451

4.1.6 Hambatan Listrik1. Resistor 50 / 8 WNOV (Volt)I ( Ampere)

10,071,5x10-3 46,6

21,1622,3x10-352,0

33,9274,3x10-352,7

45,86110,3x10-353,1

55,88110,9x10-353,0

67,64144,5x10-352,8

711,350,2154,0

2. Resistor 100 / 4 WNOV (Volt)I ( Ampere)

10,151,5x10-3100

21,9119,3x10-398,9

33,7137,2x10-399,7

45,6056,4x10-399,2

57,7677,7x10-399,8

69,5495,8x10-399,3

711,55116,4x10-399,2

4.1.7 Elektromagnet4.1.8 Kalorimeter

Pengukuran awal

Massa kalorimeter + pengaduk kosong mk=79,2x10-3Kg

Menentukan kalor jenis besi

Massa balok besi mfe=18,6x10-3Kg

Massa kalorimeter +pengaduk berisi air mk+p=140,5x10-3Kg

Massa air dalam kalorimete mair=60,8x10-3kgSuhu awal kalorimeter + isi 0= 300 K, suhu balok besi panas b=368 KSuhu akhir kalorimeter A= 302 K

Kalor Jenis air ditentukan Cair=4,2x103 J/Kg

Kalor jenis besi Cfe=624,32 J/Kg Menentukan kalor jenis tembaga

Massa balok besi mCu=70,65x10-3Kg

Massa kalorimeter +pengaduk berisi air mk+p=148x10-3Kg

Massa air dalam kalorimeter mair=68,8x10-3kgSuhu awal kalorimeter + isi 0= 299.5 K, suhu butir tembaga panas b=368 K

Suhu akhir kalorimeter A= 305 K

Kalor jenis air ditentukan Cair=4,2x103 J/Kg

Kalor jenis alumunium ditentukan CAl=9,1x102 J/Kg

Kalor jenis tembaga Ccu=357,3 J/Kg

Menentukan kalor jenis alumunium

Massa balok besi mAl=21,7x10-3Kg

Massa kalorimeter +pengaduk berisi air mk+p=150x10-3Kg

Massa air dalam kalorimeter mair=70,8x10-3kgSuhu awal kalorimeter + isi 0= 299,5 K, suhu butir tembaga panas b=368 K

Suhu akhir kalorimeter A= 303,5 K

Kalor jenis air ditentukan Cair=4,2x103 J/Kg

Kalor jenis alumunium CAl=1240,48 J/Kg

4.2 Pengolahan Data4.2.1 Pengukuran Dasara. Benda kerja 1 (BK-1): KUNINGAN

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

1. Nilai ketidakpastian dan nilai intervalnya

Nilai ketidakpastian panjang

EMBED Equation.3

=

=

= Nilai ketidakpastian

Nilai interval panjang

P2 = P = P1

45 mm = 45 mm = 45 mm Nilai ketidakpastian lebar

=

=


Nilai interval lebar L2 = = L1

25 mm = 25 mm = 25 mm Nilai ketidakpastian tinggi/tebal

=

=


Nilai interval tinggi/tebal T2 = T = T1

17,6 mm = 17,6 mm = 17,6 mm Nilai ketidakpastian volume

Nilai interval volume

V2 = V = V1

19800 mm = 19800 mm = 19800mm

Nilai massa jenis

Nilai interval massa jenis

(1 = ( = (2

= =

b. Benda kerja 2 (BK-2): Tembaga

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3



EMBED Equation.3

=

=



P2 = P = P1

45 mm = 45 mm = 45 mm Nilai ketidakpastian lebar

=

=



25,1 mm = 25,1 mm = 25,1 mm Nilai ketidakpastian tinggi/tebal

=

=





V2 = V = V1

19879,2 mm = 19879,2 mm = 19879,2 mm

Nilai massa jenis

EMBED Equation.3


(1 = ( = (2

= =

c. Benda kerja 2 (BK-2): Besi

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3



EMBED Equation.3

=

=



P2 = P = P1

45,1 mm = 45,1 mm = 45,1 mm Nilai ketidakpastian lebar

=

=



25,1 mm = 25,1 mm = 25,1 mm Nilai ketidakpastian tinggi/tebal

=

=





V2 = V = V1

mm = mm = mm

Nilai massa jenis

EMBED Equation.3


(1 = ( = (2

= =

4.2.2 Pesawat Atwood Modern dan Konvensional Percobaan GLB Pesawat Atwood Konvensional

Percobaan 1

1)

2)

3)

4)

Percobaan 21)

2)

3)

4)

Percobaan GLBB

Percobaan 1

Percobaan 2

Perhitungan atwood modern

Percobaan GLB

Percobaan 1

1)

2)

Percobaan 21)

2)

Percobaan GLBB

Percobaan 1

Percobaan 2

Momen Inersia GLBB Pesawat Atwood Modern

Percobaan 1

Percobaan 2

Pesawat Atwood Modern Percobaan 1

Percobaan 2

Percobaan I GLBB

I = (m3g -2m m3)r2

= (=

= (0,17 0,161 ) (0,00625)2

= (0,17 0,161) (3,9 .10-5)

= 0,007 . 3,9 . 10-5

= 2,73 . 10-7 kg m2 Percobaan II GLBB

I = (= r2= (= = (0,17 0,161) (0,00625)2

=0,009 . 3,9 . 10-5

=0,9 . 60-2 .3,9 . 10-5

=3,51 .10-7 kgm2

1.2.3 Modulus Elastisitas

Batang I

Pengukuran : KecilPanjang Tumpuan , L0 = .... ?

L0 = L 5%

A = 95,45mm2 = 1000 50 = 950 mm Tegangan

Rumus dari tegangan yaitu :

Regangan Rumus dari regangan yaitu :

diketahui L0 = 950mm2

Modulus Elastisitas ( E )

Rumus dari Modulus elastisitas yaitu:

Nilai f ( Pelenturan )

Rumus nilai f ( Pelenturan ) yaitu : Dimana B = beban

L0 = panjang awal

E = Modulus elastisitas

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3 Batang IIPengukuran : SedangPanjang Tumpuan , L0 = .... ?

L0 = L 10%

A = 205,714mm2 = 1000 10 = 900 mm

Tegangan








L0 = panjang awal


EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3 Batang IIIPengukuran : BesarPanjang Tumpuan , L0 = .... ?

L0 = L 15%

A = 272,25mm2 = 1000 150 = 850 mm

Tegangan








L0 = panjang awal


EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3 4.2.4 Bandul Sederhana dan Resonansi Bandul Sederhana

- Bandul Sederhana

Massa bola bandul 35gr

1. Panjang bandul 0,20 m

Diketahui : t=19,23 s

Jawab: T=

=

= 0,96 s

T2 = 0,9216 s22. Panjang bandul 0,40 m


Jawab : T=

=

= 1,25 s

T2 = 1,5625 s23. Panjang bandul 0,60


Jawab : T=

=

= 1,59 s

T2 = 2,5281 s2 Panjang bandul 0,60 m1. Massa bola 35gr

Diketahui : t= 31,32 s

Jawab: T=

=

= 1,575 s

T2 = 2,4649 s22. Massa bandul 70gr


Jawab : T=

=

= 1,595 s

T2 = 2,5281 s2 Resonansi Bandul Sederhana1. Panjang bandul 50cm dan massa bandul 35gr

Diketahui : t0 = 1,31 s

T20=27,80 s

Jawab : T0 =1,31 s

T20 =

=

= 1,37s

f0 =

f20 = 2. Panjang bandul 25cm dan massa bandul 35gr

Diketahui : t0 = 0,95 s

T20=20,25 s

Jawab : T0 =0,95 s

T20 =

=

= 1,0125 s

f0 =

f20 = 1.2.5 Resonansi Pada Pegas Helik Percobaan 1 Pegas Heliks k = 4,5 N/m

Beban m1 = 100 gram

Beban m2 = 200 gram

Percobaan 2 Pegas Heliks k = 4,5 N/m

Beban m1 = 100 gram

Beban m2 = 200 gram

1.2.6 Hambatan Listrik

Percobaan 1 (50 / 8 W)

Percobaan 2 (100 / 4 W)

2.

3.

4.

5.

6.

7.

8.

8.2.5 Elektromagnet

Nilai Ketidakpastian

Nilai Ketidakpastian

[Labolatorium Fisika 2015]55

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