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Suppose that a car weighing 2000 pounds is supported by four shock absorbers Each shock absorber has a spring constant of 6250 lbs/foot, so the effective spring constant for the system of 4 shock...

 Suppose that a car weighing 2000 pounds is supported by four shock absorbers Each shock absorber has a spring constant of 6250 lbs/foot, so the effective spring constant for the system of 4 shock absorbers is 25000 lbs/foot.


 1. Assume no damping and determine the period of oscillation of the vertical motion of the car.

 2. After 10 seconds the car body is 1 foot above its equilibrium position and at the high point in its cycle. What were the initial conditions? 

 3. Now assume that oil is added to each the four shock absorbers so that, together, they produce an effective damping force of - 6.93 Ib-sec/ft times the vertical velocity of the car body. Find the displacement y(t) from equilibrium if y(0)=0 ft and y'(0)=-10 ft/sec. 

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Answer #1

hve Briod (T) 25p0o 132 gele at I pt above squilibiiun 1667 YJs 0.319 6.314 62-85x Sin(20.oisl) ヒ 2xm) C.9 3X32. 2X 2000 6-66

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