A) \[275\text{ }J\]
B) \[375\text{ }J\]
C) \[400\text{ }J\]
D) \[300\text{ }J\]
Correct Answer: B
Solution :
Work done = area of F-t graph with x-axis Total area = area of \[\Delta ABC\] \[+\] area of \[\square \,BCDE+\] area of \[\square \,ELJE+\] area of \[\Delta FGH\] Area of \[\Delta ABC=\frac{1}{2}\times 5\times 10=25J\] Area of \[\square BCDE=10\times 10=100\text{ }J\] Area of \[\square EUG=5\times 30=150\text{ }J\] Area of \[DFGH=\frac{1}{2}\times 10\times 20=100J\] \[\therefore \] Total area \[=25+100+150+100=375\text{ }J\]You need to login to perform this action.
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