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A smooth block is released at rest on a 45^(@) incline and then slides a distance 'd'. The time taken to slide is 'n' times as much to slide on rough incline than on a smooth incline. The coefficient of friction is |
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Answer» `mu_(k)=1-(1)/(n^(2))` `d=(1)/(2)g SINN THETA xxt^(2)` On rough incline plane `d=(1)/(2)g(sin theta-mu_(k) COS theta) (nt)^(2)...(b)` SOLVING equations (a)and(b) `sin theta=n^(2)(sintheta-mu_(k) cos theta)`and Putting `theta=45^(@)` we get `mu_(k)=1-(1)/(n^(2))` |
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