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Question: Answered & Verified by Expert
A uniform chain of length $2 \mathrm{~m}$ is kept on a table such that a length of $60 \mathrm{~cm}$ hangs freely from the edge of the table. The total mass of the chain is $4 \mathrm{~kg}$. What is the work done in pulling the entire chain on the table?
PhysicsWork Power EnergyJEE MainJEE Main 2004
Options:
  • A
    $7.2 \mathrm{~J}$
  • B
    $3.6 \mathrm{~J}$
  • C
    $120 \mathrm{~J}$
  • D
    $1200 \mathrm{~J}$
Solution:
2939 Upvotes Verified Answer
The correct answer is:
$3.6 \mathrm{~J}$
Work done $=\mathrm{mgh}=1.2 \times 0.3 \times 10=3.6 \mathrm{~J}$

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