Mekanika Fluida Tugas 3.docx

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GAYA PADA BIDANG MEKANIKA FLUIDA

GILANG RIZKIAWAN HADI PUTRA

PROGRAM STUDI TEKNIK SIPIL FAKULTAS TEKNIK UNIVERSITAS RIAU KEPULAUAN 2018/2019

( 17.07.0.025 )

16 OKTOBER 2018

Tugas :

Jawaban : Diketahui : πœƒ = 45Β°

𝐴 = 0,6 π‘₯ 0,6 = 0,36 π‘š2

𝑔 = 9,81 π‘šβ„π‘  2

β„Ž = 12 π‘š

πœŒπ‘Žπ‘–π‘Ÿ = 1000 π‘˜π‘”β„π‘š3

𝑑 = 0,3 π‘š

Ditanya : 𝑃?

𝐹?

𝑦 ?

𝑦𝑝 ?

Penjelasan : 𝐹 =𝑃 ×𝐴

𝑦=

𝐹 = πœŒΓ—π‘”Γ—β„ŽΓ—π΄

𝑦 =

𝐹 = 1000 Γ— 9,81 Γ— (12 + 0,3. 𝑠𝑖𝑛 45Β° ) Γ— (0,62 ) 𝑦 =

β„Ž sin 45Β° 12 + 0,3 𝑠𝑖𝑛 45Β° 𝑠𝑖𝑛 45Β° 12 + 0,212132034 0,707106781

12,212132034

𝐹 = 9810 Γ— 12,212 Γ— 0,36

𝑦 =

𝐹 = 43128,36549 𝑁 β†’ 43,128 𝐾𝑁

𝑦 = 17,27056275 π‘š

0,707106781

1⁄ Γ— 0,6 Γ— 0,63 12 𝑦𝑝 = 17,27056275 + 2 0,6 Γ— 17,27056275 𝑦𝑝 = 17,27056275 +

0,0108 6, 217402591

𝑦𝑝 = 17,27056275 + 1,737059784 Γ— 10βˆ’3 𝑦𝑝 = 17,27229981 π‘š

𝐴 Γ— 𝑃 = ( 𝑦𝑝 βˆ’ 𝑦 +

1 2

𝐴)𝐹

0,6 𝑃 = ( 17,27229981 βˆ’ 17,27056275 + 0,3 ) Γ— 43,128 0,6 𝑃 = 0,30173706 Γ— 43,128 0,6 𝑃 = 13,01331592 𝑃=

13,01331592 0,6

𝑃 = 21,68885987 𝐾𝑁

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