Q.

Force–displacement  (Fx) graphs for four different particles moving along a straight line are shown. If  W1,W2,W3andW4 are the works done corresponding to figures a, b, c and d respectively, then  (x0=x1x0=x2x1=x3x2)

a)  Question Image                  b)  Question Image
c) Question Image                  d)  Question Image

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a

W3>W2>W4>W1

b

W2>W3>W1>W4

c

W2>W3>W4>W1

d

W3>W2>W1>W4

answer is A.

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Detailed Solution

detailed_solution_thumbnail

From the graph,
 Work done = Area under F – X curve. 
 Also, area below X-axis is negative & area above X-axis is positive.
 From the given graph, it is clearly visible that, 
A3>A2>A1>A4

     W3>W2>W1>W4  {WαA;A=area}

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