tetapan pegas
TRANSCRIPT
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Tetapan Pegas
Zaitul Harizah (123184207/PF-B)Nurul Fajriani L (123184212/PF-B)Elisya Ayu Maulida (123184213/PF-B)
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Tujuan
• Memahami konsep getaran selaras pada pegas
• Menentukan tetapan pegas dengan cara statis dan dinamis
Rumusan masalah
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Menimbang beban
Prosedur percobaan:
1. Cara statis
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Cara Dinamis
Menimbang beban
Menyusun sistem seperti
gambar
Diberi sedikit
usikan agar terjadi
getaran selaras,
kemudian mengukur
waktu untuk 10 kali
getaran.
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RUMUS PERHITUNGAN
Cara Dinamis
K = m(2π) 2 T
T= t rata-rata
10
Cara Statis
K = F X
F = m.g
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Data
No
Massa beban
(m±0,1) gr
Panjang simpangan (x±0,1) cm
Tetapan pegas statis
(k±0,001)
1 49,2 4,4
3,498
2 54,0 5,7
3 59,1 7,1
4 64,0 8,4
5 69,1 9,9
6 74,0 11,2
7 79,1 12,7
8 84,0 14,2
Tabel Cara Statis
Panjang mula-mula = (14,8 ± 0,1) cm
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No Massa beban (m±0,1) gr
Waktu 10 getaran (t±0,2) s
T
1 49,27,4
0,737,47,2
2 54,07,8
0,798,08,0
3 59,18,4
0,838,48,2
4 64,08,8
0,888,88,8
5 69,19,2
0,919,09,0
6 74,09,4
0,949,49,4
7 79,19,6
0,969,69,6
8 84,010,2
1,0110,010,0
TABEL
CARA
DINAMIS
T
0,73
0,79
0,83
0,88
0,91
0,94
0,96
1,01
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Analisis
• •
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1. pemakaian stopwatch
2. Kondisi pegas yang digunakan
3. Human error
Terdapat perbedaan hasil tetapan pegas antara pengulangan percobaan pertama dan percobaan berikutnya baik cara statis maupun dinamis dikarenakan:
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Kesimpulan
Getaran selaras adalah getaran bolak balik yang
melalui titik setimbangnya
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Terimakasih
Sekian