For the SDF column system given Modulus of elasticity: E-25 GPa Column section dimensions: b= 250 mm, Mass: m - 80 ton L-28 m h= 500 mm Obtain the following values: Lateral stiffness of the system: Angular vibration frequency, Natural vibration period: T- KNm (Write 2 digits after the decimal point) rad sec (Write 3 digits after the decimal point) sec (Write + digits after the decimal point) If the lateral force F-300 KN, find the lateral displacement of the free end: m (Write 5 digits after the decimal point) F,u- b 22. a m h Section a-a