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OpenStudy (anonymous):
two forces f1=1.2i-0.5j + 0.5k and f2= 0.9i-1.2j are applied to a moving object of mass 0.1kg. displacement produced by the forces is r=4.0i+2.0j+2.0k. determine the net work done by the two forces.
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OpenStudy (anonymous):
get net force by summing the two forces. you get F then you dot F by r i.e. \[W = F . r\]
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