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A 4m long uniform plank is hinged at one end. A 25kg load is attached...

A 4m long uniform plank is hinged at one end. A 25kg load is attached to the other end, and the plank weighs 65N. A vertical force is applied to lift the load end of the plank to a height of 2.8m. Calcuate the work done by the force?
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Asked by Zion on 12th February, 2021
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