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Figure Q1 shows a car driver who is experiencing free vibration. The total mass, m of the driver plus the car seat is 80 kg

Figure Q1 shows a car driver who is experiencing free vibration. The total mass, m of the driver plus the car seat is 80 kg and the stiffness, k of the car seat is 10 MN/m. The driver is initially at rest and experiencing 15 m/s vertical velocity.

Figure Q1

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