A Beam with an Overhang Is Loaded by a Uniform $I _ { z } = 3.36 \times 10 ^ { 6 } \mathrm {~mm} ^ { 4 }$

question 5

Multiple Choice

A beam with an overhang is loaded by a uniform load of 3 kN/m over its entire length. Moment of iner- tia $I _ { z } = 3.36 \times 10 ^ { 6 } \mathrm {~mm} ^ { 4 }$ and distances to top and bottom of the beam cross section are 20 mm and 66.4 mm,Respectively. It is known that reactions at A and B are 4.5 kN and 13.5 kN, respectively. The maximum bending Stress in the beam is approximately:

• A) \(36 \mathrm { MPa }\)
• B) \(67 \mathrm { MPa }\)
• C) \(102 \mathrm { MPa }\)
• D) \(119 \mathrm { MPa }\)

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