A long plank XY lies on the ground. A load of 120 N is placed on it. at a distance of 0.50 m from the end as shown. End Y is lifted off the ground. The upward force needed to do this is 65 . In the diagram, W is the weight of the plank, acting as its mid-point. What is the value of W.
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A long plank XY lies on the ground. A load of 120 N is placed on it. at a distance of 0.50 m from th...
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