Adjacent figure shows force-displacement graph of a moving body, work done by this force in displaci

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5.Work, Energy, Power and Collision

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Adjacent figure shows the force-displacement graph of a moving body, what is the work done by this force in displacing body from $x = 0$ to $x = 35\,m$ ? ........... $\mathrm{J}$

A

$150$

B

$237.5$

C

$287.5$

D

$315.5$

Solution

$\mathrm{W}=$ Area under given graph from $\mathrm{x}=0$ to $\mathrm{x}=35 \mathrm{m}$

$=\frac{1}{2} \times(20+40) \times 10-\frac{1}{2} \times 5 \times 5$

$=\frac{575}{2} \mathrm{J}$

Standard 11

Physics

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