The lunar excursion module has been modeled as a mass supported by four symmetrically located legs, each of which can be approximated as a spring-damper system with negligible mass (see Fig. 2.128). Design the springs and dampers of the system in order to have the damped period of vibration between \(1 \mathrm{~s}\) and \(2 \mathrm{~s}\).

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Mass, 2000 kg 70 FIGURE 2.128 Lunar excursion module.