HW Prob 5: Solve for Reactant A andB in the following figure: F1=25# F3=150# F2 = UL 15#/LF 20ft RA RB 20ft 30ft 30ft 20 CW RA RB FBD of Moments around Rb Step 1: Draw the forces (and their distance from Rb) that create a moment around Rb in the FBD above Step 2: To Solve for RAy, sum moments about RB: CW Moment = CCW Moment CW Moment (+) CCW Moment (-) Force Mag Dis. Moment Force Mag Dist. Moment %3D Sum CWM: Sum CCWM: RA RB FBD of Moments around Ra Step 3: Draw the forces (and their distances from Ra) that create a moment around Ra in the FBD Step 4: To Solve for RBy, sum moments about RA: CW Moment = CCW Moment CW Moment (+) CCW Moment (-) Moment Force Mag Dist. Moment Force Mag Dist. Sum CWM: Sum CCWM: Final Step: Check your answer, Sum Forces in Y direction = 0 ans Ray is 775#, Rby is 900#

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Introduction to Engineering Design

Students are often confused with engineering and design. The term engineering design has two words with different meanings, engineering, and design. The term engineering implies applications of laws and principles of science to design and analyze physical structures and components. In civil engineering, students apply the concept of physics and chemistry to design and build structures and buildings. In engineering disciplines, the term design means determining the dimensions, loads, and associated influences on the component due to the applied loads such as stresses and deformations. The estimation of such parameters is crucial to make the component or structure foolproof.