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Ek=2 Ep
A=30 cm=0,3 m
Ditanyakan: y ?
Dijawab:
Hukum kekekalan energi:
E=Ek+Ep
E=2Ep+Ep
E=3Ep
¹/₂k.A²=3.¹/₂k.y²⇒coret ¹/₂ dan k
Balikan
3y² = A²
y² = A²
3
= 0,3²
3
=0,09
3
=0,03
y =√(0,03)
=√3x10⁻²
=0,1√3 m
Jelas? O_O
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