Elementary Principles 21 - 3.11(a Wb = mb g = 122.5 kg...

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3- 5 3.11 (a) Wm g bb == = 1225 1202 . kg 9.807 m / s 1 N 1 kg m / s N 2 2 V WW g b bI w = = × = ρ ( . 1202 0996 1 119 N - 44.0 N) 1 kg m / s kg / L 9.807 m / s N L 2 2 b b b m V = 122 5 103 . . kg 119 L kg / L (b) mm m fn fb += ( 1 ) x m m x f f b f =⇒= (2) ( ),( ) 12 1 ⇒= x nf b f di (3) VV V m f f nf nf b b + = ρρ ⇒+ F H G I K J =⇒ F H G I K J =− 23 1 11 bg , m xx m x b f f f nf b b f f bn f x f f f // (c) x f f f = = = 110 3 031 /. . 1/1.1 1/0.9 1/1.1 (d) V V V fl u n g so t h e rb ++ + = m m m f f nf nf lungs other b b m f m b x f m nf m b x f b f f f nf lungs other b f + = F H G I K J ++= F H G I K J = () 1 1 ⇒− F H G I K J + x m f f f lungs other b F H G I K J + F H G I K J F H G I K J = F H G I K J + F H G I K J F H G I K J = x m f f lungs other b f 1 1
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