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A beam of length `l` is supported at one end. If `W` is the uniform load per unit length, the bending moment `M` at a distance `x` from the end is given by `M=1/2l x-1/2W x^2dot` Find the point on the beam at which the bending moment has the maximum value.

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The correct Answer is:
`x=(l)/(2W)`
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