A force F is acting at any point. what will be the component of this force in direction of making theta angle with direction of force? write .
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Work done by a force W=FS cosθ
where θ is the angle between force F and displacement S.
Work done is maximum and positive when cosθ=1
⟹ θ=0
o
Thus displacement of the body must be in same direction as that of force to get the maximum positive work.
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