EXepe 6 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

Thanks for answering

A thin polymer plate PQR is deformed so that corner Q is displaced downward by a distance L = 1.45 mm to new position Q' as shown. Determine the shear strain at Q' associated with the two edges (PQ and QR). 120 mm 480 mm. P R 240 mm -2692 μrad -3352 μrad O-4917 prad -3610 μrad O-2921 urad Q 'Q' X

Consider the stepped bar made with a linear elastic material and subjected to an axial load of1 kN, as shown in the figure. 4000 L1-400 mm + L2- 900 mm 1 1 41-100 mm² EI=2×10 MPa 42=60 mm² E2-3x105 MPa P-1 kN Segments 1 and 2 have cross-sectional are of 100mm² and 60mm², Young's modulus of 2x10³ MPa and 3×10³ MPa, and length of 400mm and 900mm, respectively. The strain energy (in N-mm, up to one decimal place) in the bar due to the axial load is