Two forces act on a massless block. If the force FA is known, what must the magnitude of F3 be in order to keep the block from rotating about point P. A. FB = 3/5 FA B. FB = 3/4 FA C. FB = FA D. FB = 4/3 FA E. FB = 5/3 FA F P FB 3 m

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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.