Question

Arrange the four graphs in descending order of total work done; where $W _{1}, W _{2}, W _{3}$ and $W _{4}$ are the work done corresponding to figure $a , b , c$ and $d$ respectively.

• A. $W_{3}>W_{2}>W_{1}>W_{4}$
• B. $W _{3}> W _{2}> W _{4}> W _{1}$
• C. $W _{2}> W _{3}> W _{4}> W _{1}$
• D. $W _{2}> W _{3}> W _{1}> W _{4}$

Answer 1

Answer: (A)

Work done $=$ area under $F - x$ curve. Area below $x-$ axis is negative & area above $x$-axis is positive.
So $W _{3}> W _{2}> W _{1}> W _{4}$