Question

If a constant force 'F' acts on a body and displace it to a 'S' distance what will be the work done 'W' by this force? Class = 9th...
Very urgent plzzzz answer me
​

Answer 1

If F and S are force and displacement respectively, the work done is zero if.

I hope this will may help you. PLZ mark me as brainlist. Thank you.

ANSWER

Work done by a force  W=FS cosθ

Work done by a force  W=FS cosθwhere  θ is the angle between force F and displacement S.

Work done by a force  W=FS cosθwhere  θ is the angle between force F and displacement S.Work done is maximum and positive when cosθ=1

Work done by a force  W=FS cosθwhere  θ is the angle between force F and displacement S.Work done is maximum and positive when cosθ=1⟹ θ=0o

Work done by a force  W=FS cosθwhere  θ is the angle between force F and displacement S.Work done is maximum and positive when cosθ=1⟹ θ=0oThus displacement of the body must be in same direction as that of force to get the maximum positive work.