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Engineering · Mechanical Engineering
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8. The smooth rod in the figure below has a weight of Ft.-40 N and tilted at an angle θ 30. This weight acts through the centre of mass of the rod which is located at d 20 m away from the ends of the rod. A fixed post is supporting the rod at q 10 m away from the left end of the rod as shown. (a) (2 marks) Draw a free-body diagram. (b) (2 arks) Find the magnitude of the compres sive contact force exerted on the rod by the fixed post A (c) (2 marks) Find the r and y components and the magnitude of the hinge pin force at B. (d) (2 marks) Express the results in parts (b) and (c) -- in formal Cartesian vector notation.
6. A thin uniform steal beam of mass m 100kg is supported at two points A and B as shown. The angles and distances are θ = 45°, φ = 30°, d = 8m, and di = 4 m. Assume that the friction is negligible at points A and B, and the system is in static equilibrium (a) (2 marks) Draw a free body diagram. (b) (3 arks) Determine the direction and magnitude of the force at point A (c) (3 marks) Determine the direction and magnitude of the force at point B. Use g- 9.8 m/s2 for gravitational acceleration d1
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