Work, Power and EnergyHard
Question
Force F on a particle moving in a straight line varies with distance d as shown in figure.The work done on the particle during its displacement of 12 m is
Options
A.18 J
B.21 J
C.26 J
D.13 J
Solution
Work done = Area under (F-d) graph
= Area of rectangle ABCD + Area of triangle DCE
= 2 × (7 - 3) + 1/2 × 2 × (12 - 7) = 8+5 = 13 J
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