A uniform chain of length \( l \) and mass \( m \) overhangs on a rough horizontal table with it....

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A uniform chain of length \( l \) and mass \( m \) overhangs on a
\( \mathrm{P} \)
rough horizontal table with its \( 3 / 4 \) part on the table. The friction coefficient between the table and the chain is \( \mu \).
W
Find the magnitude of work (in joules) done by the friction during the period the chain slips off the table (take \( \mu=0.2, g=10 \mathrm{~m} / \mathrm{s}^{2}, L=2 \mathrm{~m}, \mathrm{~m}=16 \mathrm{~kg} \) ).


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