A ladder .AB. of weight 300 N and length 5 m is lying on a horizontal surface. Its centre of gravity is at a distane of .2m. from end A.A weight of 80N 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 5 m is lying on a horizontal

1.	A ladder .AB. of weight 300 N and length 5 m is lying on a horizontal surface. Its centre of gravity is at a distane of .2m. from end A.A weight of 80N 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» 500J 1000 J 1150 J 1900J Answer :B