Question

at what angle the work done by constant force is maximum maximum

Answer 1

work = force × displacement× cos angle


when angle = 0°




work = force × displacement × cos 0°

cos 0° = 1


work = force × displacement × 1


work = FORce × displacement




work is maximum at 0°

that mean the direction of displacement and force are same

and,


work = force× displacement × cos 180°

cos 180° = -1


work = force × displacement× -1


work = - force× displacement



work is minimum at 180°



that mean the direction of displacement and force are opposite each other






hope it helpful for you

Answer 2

W=fscostheta
Cos theta = 1 when theta =0degree
So work done is max at 0 degree