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Verified answer
Diket :Dua pegas identik, k1 = k2 = k
Disusun seri :
1/ks = 1/k1 + 1/k2
1/ks = 1/k + 1/k
1/ks = 2/k
Ks = k/2
Disusun paralel :
Kp = k1 + k2
Kp = k + k
Kp = 2k
Tanya :
Perbandingan periode pegas seri dan paralel, Ts : Tp = __ : __?
Jawab :
Periode pegas :
T = 2•pi• akar (m/k)
Maka :
T ~ 1/ akar (k)
Jadi :
Ts / Tp = akar (Kp / ks)
Ts / Tp = akar (2k / (k/2))
Ts / Tp = akar (4)
Ts / Tp = 2
Jadi :
Ts : Tp = 2 : 1
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FZA
Verified answer
GH2 pegas identik dengan konstanta gaya k, disusun
• seri
• paralel
Ts : Tp = __
Konstanta pegas susunan
• seri: Ks = k/2
• paralel: Kp = 2k
periode getaran
T = 2π √(m/k)
perbandingan periode
Ts : Tp
= (2π √(m / Ks)) : (2π √(m / Kp))
= √(Kp / Ks)
= √(2k / (k/2))
= √4
= 2 : 1 ← jwb
perbandingan Periode seri dan paralel adalah 2 : 1