Question

a man with a box on his head is climbing up a ladder ..the work done by the man on the box is ?? 1)positive 2) negative 3)zero 4)undefined 5) none??

Answer 1

the work done is zero as we know that the formula of work done- F*s*cos theta
and here cos theta is 90degree
and the value of it is zero

Answer 2

zero work done is the answer