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Unformatted text preview: Since the air resistance force has dierent coecients of proportionality for closed and for opened chute, we need two dierential equations describing the motion. Let x 1 ( t ), x 1 (0) = 0, denote the distance the parachutist has fallen in t seconds, and let v 1 ( t ) = dx/dt denote her velocity. With m = 75, b = b 1 = 30 Nsec/m, and v = 0 the initial value problem (4) on page 111 of the text becomes 75 dv 1 dt = 75 g 30 v 1 dv 1 dt + 2 5 v 1 = g, v 1 (0) = 0 . 126...
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 Spring '10
 Hald,OH
 Math, Differential Equations, Linear Algebra, Algebra, Equations

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