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A uniform rope of length l and mass.m. h...

A uniform rope of length l and mass.m. hangs over a horizontal table with two third part on the table. The coefficient of friction between the table and the chain is `mu`. The work done by the friction during the period the chain slips completely off the table is

A

`2/9 mumgl`

B

`2/3 mumgl`

C

`1/3 mumgl`

D

`1/9 mu mgl`

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The correct Answer is:
A
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