The bent rod ABCD is supported with a ball-and- socket joint at A, a hinge at D and the elastic cable at B with stiffness k = 100 N/mm. If the 200 kg mass is held in equilibrium as shown in the figure, determine the reactions at A and D and unstretched length of the cable EB.

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Forced undamped vibrations

In mechanical engineering, vibration is expressed as the term that occurs due to an object's backward and forward movement about a point of equilibrium. Generally, there are three types of vibrations which are,