Work will be positive if the angle b/w force and displacement is,
(A) 90 degree
(B) 120 degree
(C) 180°
(D) 60°
Answers
Answered by
1
Acc. To me,
Your answer is D
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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
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I hope you understand my answer
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