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4-For the beam shown in the figure, express the shear-force and bending-moment as functions of x. Assume that the origin of axis x is the left end of the beam. Points 20 6 k 6 k/ft 8 k/ft 2 3 3 3
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L K A 1 3 2. 6K. Ck す六: 2/ 672

3 6 K [G4)リー 2 rn 3

3 Lt 21 玖ェ ーイ

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