Question

Homework21 - 3D Rigid Body Equilibrium II Due: Monday, 7 Oct 2019 HW21.1 - The boom AB is held in place by a ball-and- socket joint and a pulley and cord system as shown. Determine the axial component (y component) of the reaction at A. B 5 ft- 5f 1200 lb 2 ft TB 3ft & 300 lb HW21.2 -The horizontal shelf ABCD is held in place by hinges at A and B. There are typically two additional supports which are braces EC and ED, but the brace ED has been removed. If the hinge at A does not exert an axial thrust, determine the reactions at A and B and the force in the brace CE when the shelf is subjected to a 300-lb load at its center. X 4 ft ENGR 2120 - Engineering Statics

Answer 1

Sugpetion: (fatt all qeton afanataly) Ans 21.1 Boom AB AZ A HA VA (200 eb Cos e= N125 pino 125 Veettical 1200 FPin & o YA VA 200 Re 2S Horicortal euilitorium , efy RB Cooo HA HA o R6 Rotatinal opiliboium, EMa= 0 200 S O Rs sin *l6 - 1341.64 guattien atA