- For the frame shown below, the initial displacement is 25 mm and the initial velocity is 13 mm/s. Damping is 10% of critical. Cross-sectional dimension of each column is 250 mm x 300 mm and elastic...

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Extracted text: - For the frame shown below, the initial displacement is 25 mm and the initial velocity is 13 mm/s. Damping is 10% of critical. Cross-sectional dimension of each column is 250 mm x 300 mm and elastic modulus is 22.8 GPa. Determine (a) () (c) the natural frequency (rad/s) the amplitude the expression for the displacement 500 kN 3 m 5 m 5 m