Fundamental Problem 6.14 Determine the horizontal and vertical components of reaction at pin C. Take that P₁ = 360 lb and P2 = 570 lb.(Figure 1) Part A Determine the horizontal component of reaction at pin C. Express your answer to three significant figures and include the appropriate units. Figure 1 of 1 4 ft B ||3 ft 3 ft P1 P2 НА ? C₁ = Value Units Submit My Answers Give Up Part B < > Determine the vertical component of reaction at pin C. Express your answer to three significant figures and include the appropriate units. НА ? Cy = Value Units Submit My Answers Give Up Provide Feedback Continue

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During a bicep curl on a bicep curl machine, I'm curling a weight stack of 100 pounds (single arm...I'm jacked like that). At this very moment, the weight stack has a moment arm of 0.12m, my elbow has an angle of 63deg, my muscle force vector has an angle of 23deg, and it attaches 3cm below my elbow joint on my radius. How much force must my bicep create right at this moment to hold the weight stack in place?

(a) Write equations for the internal forces at J (axial (F), shear (V), and bending (M)) in terms of only P and a. (b) Graph your equations as functions of P, using a = 45°, from 0 < P < 1000 N. Use your graph to answer the following conceptual questions: 1. Which quantity (F, V, or M) is most affected by changes in P? 2. Based on your diagrams and graphical results, for positive values of P... I. Is point J under tension or compression? II. If the structure fails (snaps) at a point just to the right of J, which direction does your diagram indicate point J will travel (up or down)? III. Which direction do your results indicate member BC will tend to bend, concave up or down? 3. For different values of a, what will happen to these lines? Choose all that apply: a. They will shift up/down b. They will shift left/right c. They will rotate (change slope) d. Nothing (c) Graph your equations as functions of a, using P = 100 N, from 0 < a < 2π. Use your graph to identify what value of a…