Lastttt cek lampiran yaa

15][ FLUIDA DINAMIS

A = 0,75×10^-4 m²
k = 75 N/m
ρ = 500 kg/m³
h = 1 m
g = 10 m/s²... ANGGAP
∆x = x = ___?

Pada keadaan setimbang

F pegas = F fluida
k ∆x = P A
k x = ρ g h A
x = ρ g h A / k
x = 500 • 10 • 1 • 0,75×10^-4 / 75
x = 5×10^-3 m = 0,5 cm ← jwb



16][ FLUIDA DINAMIS
ANGGAP pipa horizontal
d1 = 10 cm. d2 = ___?
P1 = 1,4×10^5 Pa. P2 = 10^5 Pa
v1 = 1 m/s
ρ = 10³ kg/m³... ANGGAP

Hk. Bernouli
P2 + ½ ρ v2² = P1 + ½ ρ v1²
½ ρ (v2² - v1²) = P1 - P2
½ • 10³ (v2² - 1) = (1,4 - 1)×10^5
v2² - 1 = 80
v2² = 81
v2 = 9 m/s

persamaan kontinuitas
v2 A2 = v1 A1
A2 / A1 = v1 / v2
(d2 / d1)² = v1 / v2
(d2 / 10)² = 1 / 9
d2 / 10 = 1 / 3
d2 = 10/3 = 3⅓ cm ← jwb



17][
Zo = (5, 1) satuan panjang