Answer to Question #59417 in Mechanics | Relativity for muhammad umar
A uniform plank AB 30 m long, weighing 100 N is pivoted at point P,Q which are 5 m from the ends A and B respectively.A boy of weight 250 N stand at apoint D on the plank,1 m away from Q and the arrangement is in equilibrium.Determine the reaction R1 and R2 at the supports ?
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