Question

A block slides down an inclined plane of 30 degree with the horizontal starting from rest it covers 8 meters in first 2 sec. find the coefficient of kinetic friction between the surface of block and inclined plane? please anwsers fast​

Answer 1

Answer:

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