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Four identical symmetrically located ide...

Four identical symmetrically located ideal inextensible strings (PA,PB,PC and PD)support a rod PQ of mass m in vertical position as shown in the figure.The angle between two consecutive strings is equal to `60^(@)` Determine the normal force on the rod PQ given by the ground,assuming that the tension in each string is `(mg)/ sqrt(2)` Newton (ABCD is a square on the ground)

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