A uniform wooden beam AB 130 cm long and weighing 1.30 N rests on two sharp edges  supports C and D  placed 15 cm from each end of the beam respectively.  A  0.3 N weight hangs from a thread 20 cm from A and a 0.85 N weight hangs similarly 45 cm from B.   find the reactions at the supports

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Types of loading

In mechanical terminology, the term load indicates that external force/weight, either constant or variable, acts on a mechanical member/structure. The weight of an object of a specific material is also an external load, and the external force that works on a structure comes under the categories of loading. The external load generates its effects as stress and strain in the structure.