7-25. Determine the internal normal force, shear force, and the moment at points C and D. 2 m 2 kN/m 6 m 45° |D 3 m 3 m-
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- 4-7. Determine the moment of each of the three forces about point A. F= 250 N 30 F= 300 N 60° 4 m F=500 N Probs. 4-7/8# 5) Use the 3-step Newton's Second Law Analysis combined. with torque to solve the following problem. Three masses are attached to a uniform meter stick, as shown in the figure to your right. The mass of the meter stick is 50.0 g and the masses to the left of the fulcrum are m₁ = 75.0 g and m₂ = 100.0 g. What is mass m3 that balances the system when it is attached at the right end of the stick. The resulting system is balanced. m₁ 30 cm- m₂ 40 cm 30 cm- - S m33. The bridge shown consists of two end sections, each weighing 20 tons with center of gravity at G, hinged to a uniform center span weighing 12 tons. Compute the reactions at A, B, E, and F. 6 tons 40m– -20m 40m 30m20m20m→- -60m 20m-20m-30m-
- 14 - A force with F = -8 i +6 j N acts on a particle whose position vector r = 3 i +4 j m. What is the torque acting on the particle relative to the centre? a) 30Nm B) 10Nm NS) 40Nm D) 50Nm TO) 60NmA 12.0 m long uniform beam with a total weight of 840 N is clamped horizontally to the top of a wall with 4.0 m projecting over one side and 8.0 m projecting over the other side (see Fig. 6-33). Determine the total moment of force exerted by the beam at the wall.