What is the fundamental frequency of the massless beam shown below, which is assumed to carry a mass of 3000 kg lumped at its centre? El = 50x106 Nm². Select one: a. 0.30 Hz b. 4.8 Hz c. 9.7 Hz d. 0.15 Hz 6 m 3000 kg

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Q: Please don't use chat GBT will upvote

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Control Survey and Geodetic reductions

Control surveys or survey controls are used to establish reference points as a basis for various construction activities. Vertical and horizontal control points are to be established in a control survey to increase accuracy. After establishing the control points, all other types of surveys such as topographic, right-of-way, aerial mapping, construction layout, boundary surveys, and utility mapping can be worked upon so that control networks can be formed. The place from which the observations are made is called a survey station.