Suppose that m D 75 slugs (the car weighs 2400 lb), L1 D 7

Chapter , Problem 25

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Suppose that m D 75 slugs (the car weighs 2400 lb), L1 D 7 ft, L2 D 3 ft (its a rear-engine car), k1 D k2 D 2000 lb=ft, and I D 1000 ftlbs2. Then the equations in (40) take the form 75x00 C 4000x 8000D 0, 100000 8000x C 116;000D 0. (a) Find the two natural frequencies !1 and !2 of the car. (b) Now suppose that the car is driven at a speed of v feet pe

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