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Q.

What is the maximum length of a uniform chain of length 1 m that can over hang from a table if coefficient of friction is 0.25? 

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a

50 cm 

b

20 cm  

c

35 cm

d

25 cm

answer is A.

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Detailed Solution

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lL=μμ+1⇒ l=0.251.25× 1m=0.2m

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What is the maximum length of a uniform chain of length 1 m that can over hang from a table if coefficient of friction is 0.25?