Let's go through how to solve 3D equilibrium problems with 3 force reactions and 3 moment reactions. We go through multiple examples step by step and find reactions for different supports like journal bearings, fixed supports, and ball and socket joints. ðđExpress forces along a rope:    âĒ Force Vectors Along a Line | Mechanics Sta...  ðđBreaking forces into components:    âĒ Addition of Cartesian Vector Forces | Mech...  ðđFinding moments:    âĒ Moment of a Force | Mechanics Statics | (L...  If you found these videos helpful and you really want to give something, it's very much appreciated. Donate: ðđ https://ko-fi.com/questionsolutions ðđ https://www.questionsolutions.com/donate ðđ PayPal: [email protected] Intro (00:00) The sign has a mass of 100 kg with center of mass at G. (01:18) Determine the components of reaction at the fixed support A. (04:41) The shaft is supported by three smooth journal bearings at A, B, and C. (06:46) Find more at https://www.questionsolutions.com Book used: R. C. Hibbeler and K. B. Yap, Engineering Mechanics Statics. Hoboken: Pearson, 2017.