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