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Work will be positive if the angle b/w force and displacement is,(A) 90 degree(B) 120 degree(C) 180°(D) 60° |
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Answer» Acc. To me, Your answer is D ------------------------------------------------ Formula of W=F*S*COS∅ W is -ve or +ve depend on cos∅(ANGLE b/w force and dislacement) cos 90=0 ---W=0 cos120= -1/2-----w= -ve cos180= -1------w= -ve cos60=1/2 ----w = +ve ------------------------------------------------ I HOPE you UNDERSTAND my answer |
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