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Question: Answered & Verified by Expert
A heavy box of mass $50 \mathrm{~kg}$ is moving on a horizontal surface. If co-efficient of kinetic friction between the box and horizontal surface is 0.3 then force of kinetic friction is :
PhysicsLaws of MotionJEE MainJEE Main 2024 (05 Apr Shift 2)
Options:
  • A $1.47 \mathrm{~N}$
  • B $147 \mathrm{~N}$
  • C $14.7 \mathrm{~N}$
  • D $1470 \mathrm{~N}$
Solution:
1190 Upvotes Verified Answer
The correct answer is: $147 \mathrm{~N}$

$F_k=\mu_k N=0.3 \times 50 \times 9.8=147 N$

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