2L Answer: DI = B 4 m 2L i 3L D 4 m m 2L E H 2L AB=BC=CD=DE = EF = FG L F 4 m

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Free undamped vibrations

Whenever an object/system displaces in either side of its equilibrium position with the help of an external/internal means, then the object/system moves regularly or randomly on both sides of its equilibrium position. This motion is called vibration. Generally, there are three types of vibration: longitudinal vibration, transverse vibration, and torsional vibration.