A box is dragged across a surface by a rope which makes an angle 45^(@) with thehorizontal. The tension in the rope is 100 N when the box is dragged 10 m . The work done is

A box is dragged across a surface by a rope which makes an angle 45^(@

1.	A box is dragged across a surface by a rope which makes an angle 45^(@) with thehorizontal. The tension in the rope is 100 N when the box is dragged 10 m . The work done is
Answer» (a) 707.1J (B) 607.1 J (C) 141.2J (d) 900J Solution :The component of force ACTING along the surface is `t cos THETA` `"Work DONE" =T cos theta xx x` `=100cos 45^(@)xx10=707.1 J`