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

Option: 1
$\mathrm{W_{3}> W_{2}> W_{1}> W_{4}}$

Option: 2
$\mathrm{W_{3}> W_{2}> W_{4}> W_{1}}$

Option: 3
$\mathrm{W_{2}> W_{3}> W_{4}> W_{1}}$

Option: 4
$\mathrm{W_{2}> W_{3}> W_{1}> W_{4}}$

Answers (1)

best_answer

$\mathrm{W_{1}= 0}$
(By symmetry , $\mathrm{x_{1}= 2x_{0}}$ )
$\mathrm{W_{2}= F\left ( x_{2}-x_{1} \right )}$
$\mathrm{W_{3}= F\left ( x_{2}-x_{1} \right )+\frac{1}{2}\times\left ( x_{3}-x_{2} \right )F}$
$\mathrm{W_{4}\Rightarrow negative}$

The correct option is (1)

Posted by

seema garhwal

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