Question

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? (ans : 250J)

Answer 1

Answer:

calculate the works separately and add them

Answer 2

Explanation:

formula is W=mgx+Mgl and on solving answer is 250 J