Physics-
General
Easy

Question

The relationship between the force F and position x of a body is as shown in figure. The work done in displacing the body from x equals 1 mto x equals 5m will be

  1. 30 J    
  2. 15 J    
  3. 25 J    
  4. 20 J    

The correct answer is: 15 J


    Work done=area enclosed by F minus xgraph
    =area of ABNM + area of CDEN - area of EFGH + area of HIJ

    =1 cross times 10 plus 1 cross times 5 minus 1 cross times 5 plus fraction numerator 1 over denominator 2 end fraction cross times 1 cross times 10
    equals 10 plus 5 minus 5 plus 5 equals 15 blank J

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