A block of mass 100 kg slides over a distance of 10m on a horizontal surface. If the co-efficient of friction between the surfaces is 0.4 , then the work done against friction (in J ) is :

Question

Accepted Answer

Correct answer: C. (c) Givenm=100 kg s=10 m =0.4 Asf= mg=0.4 100 10=400 N NowW=f .s=400 10=4000 J

$A block of mass 100 kg slides over a distance of 10 m on a horizontal surface. If the co-efficient of friction between the surfaces is 0.4 , then the work done against friction (in J) is :$

Solution

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