4.A hallow circular tube has an outside diameter of 85 mm and is 5 mm thick. Thetube is fixed (cantilever) at one end and subjected to a torque of 4 kN-m at itsfree end. What is the maximum shearing stress in the tube?

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5.A decorative concrete beam is simply supported over a span of 6 m. The beamweighs 4 kN/m and the cracking moment is 38 kN-m. What is the safe uniformload of the beam?

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6.A 2.8 m cantilever beam carries a uniformly distributed load of 20 kN/mthroughout its length and a concentrated load of 30 kN at a point 2 meters fromthe fixed end. What is the bending moment at the fixed end?

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7.A 12 m long beam is simply supported at the left end and at 3 m from the rightend. The beam will be subjected to a uniformly distributed moving load. Whattotal length of the beam must be subjected to this load to produce maximumnegative moment at midspan?A.9 mB.3 mC.7.5 mD.4.5 m

Situation 1– The hook issubjected to three forces P, Qand S as shown. P = 35 kN and Q= 45 kN.8.Determine the anglesuch that the resultant ofthe three forces is 80 kNacting horizontally to theright.

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1.If angle= 60°, find the magnitude of the force S such that the resultantforce is horizontal to the right.

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