Question: A bracket ABC has a square cross section of side length 4 cm. The end A is fixed in the ground and a force

A bracket ABC has a square cross section of side length 4 cm. The end A is fixed in the ground and a force is

A bracket ABC has a square cross section of side length 4 cm. The end A is fixed in the ground and a force is applied at the end C, as shown in Figure 4. The allowable normal and shear stresses of the material are 600 MPa and 250 MPa, respectively. B A 1m 3 m C 30% Figure 4 2.5 kN (a) Determine the reactions at the fixed support A. (7 marks) (b) Draw the shear force and bending moment diagrams of the bracket ABC, showing the key values on the diagrams. (10 marks) (c) Justify whether or not the bracket can safely sustain the force. (8 marks)

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