A ladder .AB. of weight 300 N and length 5m is lying on a horizontal surface. Its centre of gravity is at a distance of .2m. from end A. A weight of 80 N is attached at end B. The work done in raising the ladder to the vertical position with end .A. in contact with the ground is,

A ladder .AB. of weight 300 N and length 5m is lying on a horizontal s

1.	A ladder .AB. of weight 300 N and length 5m is lying on a horizontal surface. Its centre of gravity is at a distance of .2m. from end A. A weight of 80 N is attached at end B. The work done in raising the ladder to the vertical position with end .A. in contact with the ground is,
Answer» 500 J 1000 J 1150 J 1900 J ANSWER :B