1.

Work will be positive if the angle b/w force and displacement is,(A) 90 degree(B) 120 degree(C) 180°(D) 60°​

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



Discussion

No Comment Found

Related InterviewSolutions