JEE Main 2024 · 29 January · morning · Single correct · +4 / −1

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 :

  1. (a) 3900
  2. (b) 4500
  3. (c) 4200
  4. (d) 4000
Answer and solution

Answer (d) 4000

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Asked about 40 times in JEE Main since 2020. This question is from 2024.