Pls, help me out: A plank ab 3.0 long weighing20kg and with its centre gravity 20m from the end a carries a load of mass 10kg at the end a.It rests on two supports at c and d.Calculate:
(1)conpute the values of the reaction forces R1 and R2 at c and d
(2)how far from d and on which side of it must a mass of 24kg be placed on the plank so as to make the reactions equal?what are their values?
(3)without this 24kg,what vertical force applied at b will just lift the plank clear of d?what is then the reaction of c?
In Mathematics
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Asked by EmmiGee on 20th November, 2022
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