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A-rigid-uniform-bar-of-length-2-4m-is-pivoted-horizontally-at-its-mid-point-Weights-are-hung-from-two-points-of-the-bar-such-that-a-200N-is-at-the-0-4m-mark-and-a-300N-is-at-1-6m-mark-To-maintain-hor




Question Number 32075 by NECx last updated on 19/Mar/18
A rigid uniform bar of length 2.4m  is pivoted horizontally at its mid-point.  Weights are hung from two points  of the bar such that a 200N is at  the 0.4m mark and a 300N is at  1.6m mark.To maintain  horizontal equilibrum a couple is  applied to the bar. What is the  torque and direction of the couple?
$${A}\:{rigid}\:{uniform}\:{bar}\:{of}\:{length}\:\mathrm{2}.\mathrm{4}{m} \\ $$$${is}\:{pivoted}\:{horizontally}\:{at}\:{its}\:{mid}-{point}. \\ $$$${Weights}\:{are}\:{hung}\:{from}\:{two}\:{points} \\ $$$${of}\:{the}\:{bar}\:{such}\:{that}\:{a}\:\mathrm{200}{N}\:{is}\:{at} \\ $$$${the}\:\mathrm{0}.\mathrm{4}{m}\:{mark}\:{and}\:{a}\:\mathrm{300}{N}\:{is}\:{at} \\ $$$$\mathrm{1}.\mathrm{6}{m}\:{mark}.{To}\:{maintain} \\ $$$${horizontal}\:{equilibrum}\:{a}\:{couple}\:{is} \\ $$$${applied}\:{to}\:{the}\:{bar}.\:{What}\:{is}\:{the} \\ $$$${torque}\:{and}\:{direction}\:{of}\:{the}\:{couple}? \\ $$
Commented by NECx last updated on 19/Mar/18
please help
$${please}\:{help} \\ $$

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