Question

A box is dragged across a floor by a rope which makes an angle of 45° with the horizontal. The tension in the rope is 100N while the box is dragged 10 m. The work done is?

Answer 1

Ans :- 1000 J
Fcos45 = 100 N
F=100/cos45

W=F.s
Fcos45.s

100.10
=1000J