Saturday, May 12, 2012

Balon Udara


Sebuah Balon udara dengan diameter 10 m berisikan udara panas. Kerapatan/massa jenis udara didalam balon udara tersebut adalah 75% kerapatan udara luar (kerapatan udara luar 1,3 kg/m3). Besar massa total maksimum penumpang dan beban yang masih dapat diangkut oleh balon udara tersebut adalah ….
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15 comments:

  1. Silma RahimaMay 12, 2012 at 10:06 AM

    A. 0 kg
    B. 1,3 kg
    C. 170 kg
    D. 510 kg
    E. 680 kg

    ReplyDelete
  2. Silma RahimaMay 12, 2012 at 10:18 AM

    m=(ρ udara- ρ balon)v balon
    m=(1,3 - 0,975)523,34
    m= 170,085 kg

    ReplyDelete
  3. outbound di malangMay 14, 2012 at 5:56 AM

    salam kenal gan, sukses selalu dan tetap semangat

    ReplyDelete
  4. Irfan MuammarMay 14, 2012 at 1:54 PM

    W Udara = p.v.g
    = 1,3 . 10 (gak tau pak :'D) . 10
    = 130
    F Atas = p.v.g
    = 75% . 10 . 10
    = 75
    P benda = W Udara - F atas
    = 130 - 75
    = 55 kg/m3

    Sisanya kayaknya harus dijelasin di sekolah deh pak :')

    ReplyDelete
  5. AnonymousMay 14, 2012 at 2:19 PM

    -> 100%-75% = 25%
    Fa = Wb
    m*g = ρu*V*g*0,25
    m*g = 1,3*523,3*g*0,25
    m = 1,3*523,3*0,25
    m = 170,08 kg

    ~uti

    ReplyDelete
  6. idaMay 14, 2012 at 2:31 PM

    100% dikurangi 75%=25%
    V = 4/3 π r³ = 4/3 .3,14 .5³
    = 523,3 m³
    massa beban = .ρudara . V balon .25%
    masa beban = 1,3 .523,3 . 0,25
    massa beban = 170,07

    ReplyDelete
  7. EldiMay 15, 2012 at 6:23 AM

    Jwb:
    100% - 75% = 25%
    Volume = 4/3 π x r³ = 4/3 x 3,14 x 5³
    = 523,3 m³
    massa beban = massa jenis udara x Volume balon x 25%
    massa beban = 1,3 x 523,3 x 0,25
    = 170,07

    ReplyDelete
  8. sarahMay 15, 2012 at 12:04 PM

    M=ρudara.vbalon.25%
    =1.3.523.3.25/100
    =170,07 kg

    ReplyDelete
  9. Irfan MuammarMay 15, 2012 at 12:50 PM

    F Atas = p.v.g
    = 75% . 4/3 Phi r3 . 10
    = 0,975 . 523 . 10
    = 5099,2
    w Udara = 1,3 . 4/3 Phi r3 . 10
    = 1,3 . 523 . 10
    = 6799
    Massa total maksimum = W udara - F atas
    = 6799 - 5099
    = 1700

    Sekian pak :')

    ReplyDelete
  10. citraMay 15, 2012 at 12:58 PM

    (Massa jenis) x (Volume balon) x (25% udara luar)

    1,3 x 4/3 3,14 x 125 x 0,25
    170.083

    ReplyDelete
  11. nazly BintangMay 15, 2012 at 4:44 PM

    1000.09 kg(?)

    ReplyDelete
  12. AnonymousMay 15, 2012 at 5:14 PM

    Balon dalam keadaan setimbang
    ∑Fy = 0
    (mbg + mgas)g = FA ; FA adalah gaya angkat archimedes

    mb.g + pgas.V.g = pudara.V.g
    mb = (pudara – pgas) V
    mb = (1/4 pudara) 4/3.phi.R^3 {V: volume bola}
    mb = 1/3 (1,3) . 3,14.5^3

    Jawabanya adalah 170,08202 kg
    --------- Arafah XI-Valiant

    ReplyDelete
  13. UnknownJune 5, 2012 at 8:09 AM

    (Massa jenis) x (Volume balon) x (25% udara luar) 1,3 x 4/3 3,14 x 125 x 0,25 170.083

    ReplyDelete
  14. AnonymousJune 7, 2012 at 4:22 AM

    100% dikurangi 75%=25% V = 4/3 π r³ = 4/3 .3,14 .5³ = 523,3 m³ massa beban = .ρudara . V balon .25% masa beban = 1,3 .523,3 . 0,25 massa beban = 170,07
    Gagan 11 Gallant

    ReplyDelete
  15. AnonymousNovember 22, 2024 at 3:38 PM

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    ReplyDelete

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