Replace the 25-KN force acting on the steel column by an equivalent force-couple system at point O. This replacement is frequently done in the design of structures. The force is positive if upward, negative if down. The couple is positive if counterclockwise, negative if clockwise. 25 KN 1.1 m Answers: R= i Mo= i 98 mm KN kN.m

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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,