A uniform chain of length 𝐿 and mass 𝑀 overhangs a horizontal table with its two-third part on the table. The friction coefficient between the table and the chain is μ. The work done by the friction during the period the chain slips off the table is

May 10, 2022

by Ezee_Notes

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Physics Problems

Question: A uniform chain of length 𝐿 and mass 𝑀 overhangs a horizontal table with its two-third part on the table. The friction coefficient between the table and the chain is μ. The work done by the friction during the period the chain slips off the table is

(A) $-\dfrac{1}{4}\mu MgL$

(B) $-\dfrac{2}{9}\mu MgL$

(D) $-\dfrac{6}{7}\mu MgL$

Answer: Option (B)

Solution:

A uniform chain of length 𝐿 and mass 𝑀 overhangs a horizontal table with its two-third part on the table. The friction coefficient between the table and the chain is μ. The work done by the friction during the period the chain slips off the table is