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Una prueba de impacto con ocupantes simulados para un nuevo modelo de auto de 2 0 0 0 lbf desea medir la velocidad m xima

Una prueba de impacto con ocupantes simulados para un nuevo modelo de auto de 2000 lbf desea medir la velocidad mxima que el sistema de amortiguamiento protege el vehculo. Para esto utiliza una barrera liviana que pesa 300 lbf seguida de un resorte como muestra la lmina. El resorte tiene un coeficiente de 700 lbf/ft y un largo de 22 ft en su estado neutral, encontrando que el carro se protege mientras el resorte se comprime un mximo de 12 ft. El coeficiente de friccin en la zona antes de la barrera es de 0.8.
Suponga que el vehculo queda estacionario al final de la prueba y se mantiene pegado a la barrera (caja) una vez impacta.
A crash test with simulated occupants for a new 2000 lbf car model wants to measure the maximum speed that the shock absorber system protects the vehicle. It uses a lightweight barrier weighing 300 lbf followed by a spring as shown in the foil. The spring has a coefficient of 700 lbf/ft and a length of 22 ft in its neutral state, finding that the car is protected while the spring is compressed a maximum of 12 ft. The coefficient of friction in the area before the barrier is 0.8.
Assume that the vehicle is stationary at the end of the test and remains attached to the barrier (box) after impact.A crash test with simulated occupants for a new 2000lbf car model wants to measure the maximum speed that the shock absorber system protects the vehicle. It uses a lightweight barrier weighing 300lbf followed by a spring as shown in the foil. The spring has a coefficient of 700lbft and a length of 22ft in its neutral state, finding that the car is protected while the spring is compressed a maximum of 12ft. The coefficient of friction in the area before the barrier is 0.8.
Assume that the vehicle is stationary at the end of the test and remains attached to the barrier (box) after impact.
WA=2000lbf
Una prueba de impacto con ocupantes simulados para un nuevo modelo de auto de 2000lbf desea medir la velocidad mxima que el sistema de amortiguamiento protege el vehculo. Para esto utiliza una barrera liviana que pesa 300lbf seguida de un resorte como muestra la lmina. El resorte tiene un coeficiente de 700lbfft y un largo de 22ft en su estado neutral, encontrando que el carro se protege mientras el resorte se comprime un mximo de 12ft. El coeficiente de friccin en la zona antes de la barrera es de 0.8.
Suponga que el vehculo queda estacionario al final de la prueba y se mantiene pegado a la barrera (caja) una vez impacta.
Ingrese la velocidad antes del impacto para el vehculo en ftsIngrese la velocidad antes del impacto para el vehculo en ft/s
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