The assembly is used to support the 130-kg container having a center of mass at G. The spring has an unstretched length of 250 mm and stiffness of k = 300 kN/m. (Figure 1).

Problem Statement Based on Problem 5-74 from the textbook. The bend rod is supported at A, B, and C by smooth journal bearings. Determine the components of reaction at the bearings if the rod is subjected to the force F. The bearings ar ein proper alignment and exert only force reactions on the rod. F=815m d=1.00m e=1.90 m f=2.20 m 30° 60° B d f 0.75 m

Each spring has an unstretched length of 2 in and a stiffness of fc = 330 N/m . 1. Determine the stretch in 04 spring required to hold the 18-kg crate in the equilibrium position shown. 2. Determine the stretch in OB spring required to hold the 18-kg crate in the equilibrium position shown.

Determine the x and y components of reaction the pin C exerts on member EDC using scalar notation.

Q1) A man is pulling a spring of stiffness coefficient 8 Ib/in by his hand with the entire arm held horizontally rotating about shoulder joint O; this force acts at the 21° angle is shown. Determine the force exerted by the deltoid muscle on the upper arm at A and x- and y- components of the force reaction at the shoulder joint. The weight of the upper arm Wu = 4.1 Ib, the weight of the lower arm W1 2.4 Ib, and the weight of the hand WH= 0.9 Ib; all these weights act at the locations shown in the figure. the spring extended 1 in only as shown in figure 1. A tensile force in the deltoid muscle prevents the arm from A- 8 Ibin Equilibrium x-1 in Deltoid muscle Fo A YW, YW -5.2 16.5 25.4 Figure 1

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