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To determine the coefficient of friction between a rough surface and a block,the surface is kept inclined at 45° and the block is released from rest.The block takes a time t on moving a distance d.The rough surface is then replaced by a smooth surface and the same experiment is repeated.The block now takes a time t/2 in moving down the same distance d.The coefficient of friction is how much??

To determine the coefficient of friction between a rough surface and a block,the surface is kept inclined at 45° and the block is released from rest.The block takes a time t on moving a distance d.The rough surface is then replaced by a smooth surface and the same experiment is repeated.The block now takes a time t/2 in moving down the same distance d.The coefficient of friction is how much?? 

Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Dear Sucheta
 
coefficient of friction (mu) = tan theta (1 – n^2)
 
 = 1 [1 – 1/22]
 
 = 1 – ¼
 = ¾
 
Regards
Arun

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