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- Ayunan bandul
r = Rudi, d = Dewi
Lr = 4 Ld
Tr : Td = ___ ?
Periode ayunan bandul
T = 2π √(L / g)
Periode sebanding dengan akar panjang tali
Tr / Td = √Lr / √Ld
Tr / Td = √(Lr / Ld)
Tr / Td = √( (4 Ld) / Ld) )
Tr / Td = √4 = 2
Tr : Td = 2 : 1 ← jawaban