Civil Engineering Archive: Questions from October 29, 2023
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Solve the initial value problem \[ y^{\prime \prime}+6 y^{\prime}+10 y=0, y(0)=1, y^{\prime}(0)=0 \] \[ \begin{array}{l} y=3 e^{-3 t} \cos t+e^{-3 t} \sin t \\ y=3 e^{-3 t}+e^{-3 t} \\ y=\cos t+3 \sin1 answer -
109. Figure P-109 shows part of the landing gear of a small plane. Determine the compressive stress in brace A B produced upon landing by a ground reaction R = 20 kN. AB makes an angle of 53.1º wit
109. En la figura \( \mathrm{P}-109 \) se muestra parte del tren de aterrizaje de una avioneta. Determine el esfuerzo de compresión en el tornapunta \( A B \) producido al aterrizar por una reacción1 answer -
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