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A beam is supported at the two ends and is uniformly loaded. The bending moment `M` at a distance `x` from one end is given by `M=(W L)/2x-W/2x^2` . Find the point at which `M` is maximum.

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`M={WL}/2x−W/2x^2`
On differentiating, we get
`{dM}/{dx}={WL}/2−2W/2x`
`{dM}/{dx}=0`
...
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