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Question: Answered & Verified by Expert
A marble block of mass $2 \mathrm{~kg}$ lying on ice when given a velocity of $6 \mathrm{~m} / \mathrm{s}$ is stopped by friction in $10 \mathrm{~s}$. Then the coefficient of friction is
PhysicsLaws of MotionJEE MainJEE Main 2003
Options:
  • A
    $0.02$
  • B
    $0.03$
  • C
    $0.04$
  • D
    None of these
Solution:
2233 Upvotes Verified Answer
The correct answer is:
None of these
$a=\mu g=\frac{6}{10}$ [ using $\mathrm{v}=\mathrm{u}+\mathrm{at}$ ]
$\Rightarrow \mu=\frac{6}{10 \times g}=\frac{6}{10 \times 10}=0.06$

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