GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Detailed explanation-1: -Answer and Explanation: Given that the strength of a rectangular beam varies jointly as its width (w) and the square of its depth (d), we can express this as: s∝wd2.
Detailed explanation-2: -What actually varies as “the product of width and square of depth” is rigidity. A beam twice as wide and four twice as deep will have one-eight the deflection at the same load.
Detailed explanation-3: -⇒d=√23⋅2r. Q. The strength of a beam varies as the product of its breadth and square of its depth.
Detailed explanation-4: -A beam of rectangular cross-section is subjected to a bending moment M (N·m) and a maximum shear force V (N). The bending stress in the beam is calculated as =6M/bd2 (Pa), and average shear stress is calculated as =3V/2bd (Pa), where b is the width and d is the depth of the beam.