A ladder 'AB' 2.5m long and of weight 150N with its centre of mass at a distance 1m from end 'A' is on the ground. A 40N weight is attached to the end B. The work to be done to arrange the ladder in vertical position with end 'A' contact with the ground is

A ladder 'AB' 2.5m long and of weight 150N with its centre of mass at

1.	A ladder 'AB' 2.5m long and of weight 150N with its centre of mass at a distance 1m from end 'A' is on the ground. A 40N weight is attached to the end B. The work to be done to arrange the ladder in vertical position with end 'A' contact with the ground is
Answer» 190J 250J 285J 475J Answer :B