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A block slides down an inclined surface ofinclination 30 degree with the horizontal Starting from rest it covers 8m in the first two seconds .Find the coefficient of kinetic friction between the two

A block slides down an inclined surface ofinclination 30 degree with the horizontal Starting from rest it covers 8m in the first two seconds .Find the coefficient of kinetic friction between the two

Grade:12

1 Answers

Badiuddin askIITians.ismu Expert
147 Points
11 years ago

Dear pallavi

Force acting along the inclination is = mgsinΘ  - μmgcosΘ

so acceleration a =(mgsinΘ  - μmgcosΘ)/m

                         =gsinΘ  - μgcosΘ

S =ut +1/2 a t2  

8=0+1/2 (gsinΘ  - μgcosΘ)*4

or 4=10*1/2  - μ*10*√3/2

  μ=1/5√3


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