A beam is subjected to equal bending moments of M, - 3600 N-m. The cross-sectional dimensions are b- 115 mm, c- 31 mm, d-66 mm, and t=4 mm. Determine: (a) the centroid location (measured with respect to the bottom of the cross-section), the moment of inertia about the z axis, and the controlling section modulus about the z axis, (b) the bending stress at point H. Tensile stress is positive, while compressive stress is negative. (c) the bending stress at point K. Tensile stress is positive, while compressive stress is negative. (d) the maximum bending stress produced in the cross section. Tensile stress is positive, while compressive stress is negative M- H (typ) K b. Answer: mm (a) y= i ! mm I,- i mm S= MPa (b) OH = MPa (c) OK = MPa (d) Omax

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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.