Determine the moment of force Fc about the bolt located at A. The magnitude of foce Fc = 50 lb. Give your answer in lb-ft, using Counter- Clockwise as positive rotation, to 3 significant digits. 2.5 ft 0.75 ft 2,0° FB 25° 30° Fc

For questions 1 to 5, consider a bent rod fixed at the wall at A and is acted upon by a 20- N force (parallel to the z-axis) and a 50-N force (parallel to the y-axis) applied at points B and C, respectively. y Z A 3. Which of the following moments is zero? Moment of the 50-N force about y-axis. Moment of the 50-N force about x-axis. Moment of the 20-N force about y-axis. Moment of the 50-N force about z-axis. -4 m- C -2 m- 50 N 20 N. x B X equivalent force-couple set at A of the applied forces 20 and C is the resultant couple

Determine angular velocity of the bar, [rad/s], when it goes through horizontal position? The bar, WA= 100 [lb] and L=3 [ft], shown in figure is initially in the vertical position. The bar is subjected to a couple moment of M=20 [lb-ft] and a force F=50 [lb], which is always perpendicular to the end of bar. Also, the spring is attached to bar at distance L/2 from point A, and has unstretched length of lo=1.2 [ft]. The spring remains in horizontal position throughout the motion due to the roller guide at B. Determine angular velocity of the bar, o [rad/s], when it goes through horizontal position. Spring constant is k=7 [lb/ft]. Distance between point A and vertical guide is d=1.5 [ft]. F g B thing M A d ≈

P = 36 kips 9' B de 2) Assuming that no load acts, compute the reactions and draw the shear and moment curves for the beam in the figure above, if support A settles 0.5" and support C settles 0.75". Assume E = 29,000 ksi and I = 150 in. Label all critical points on the diagrams. Draw the deflected shape also. 6'

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