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Answer to Question #53039 in Other Physics for olusola puddicombe

Question #53039
a uniform plank AB 30m long weighing 100N is pivoted at points P, Q which are 5m from the ends A and B respectively. a boy of weight 250N stands at a point D 1m away from Q and the arrangement is in equilibrium. determine the reaction R1 R2 at the supports
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