Force F on a particle moving in a straight line varies with distance d as shown in figure. The work done on the particle during its displacement of 12 m is

Force F on a particle moving in a straight line varies with distance d

1.	Force F on a particle moving in a straight line varies with distance d as shown in figure. The work done on the particle during its displacement of 12 m is
Answer» 18 J 21 J 26 J 13 J Solution :Work done = Area under (F - d) graph = Area of rectangule ABCD + Area of triangle DCE `= 2 xx (7 - 3) + 1/2 xx 2 xx (12 - 7)` `= 8 + 5 = 13 J`.