A) 30 J
B) 15 J
C) 25 J
D) 20 J
Correct Answer: B
Solution :
Work done = area under F-x graph = area of rectangle ABCD + area of rectangle LCEF + area of rectangle GFIH + area of triangle IJK \[=(2-1)\times (10-0)+(3-2)(5-0)+(4-3)(-5-0)\] \[+\frac{1}{2}(5-4)(10-0)\]\[=15\,\,J\]You need to login to perform this action.
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