Question

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

• A. 18 J
• B. 21 J
• C. 26 J
• D. 13 J

Answer 1

Answer: (D)

13 J

Answer 2

Work done $=$ area between force $v / s$ displacement curve and displacement axis
$=(2 \times 4)+\frac{2 \times 5}{2}=13\, J$