an object of mass 4 kg is placed on an inclined plane at an angle of 60. if the object slides down the plane with an acceleratio n of 3m/s, what is the coefficient of the kinetic friction
1 answer:
The forces on the y axis are:
N-mgcos(60)=0 , wich becomes
N=mgcos(60)
Rember that the friction force is always contrary to the motion of an object and its formula is f=μ * N
The forces in the x axis are:
-f + mgsin(60)= m * a
-μ*mgcos(60) + mgsin(60)=m*a ,
μ = ( m*a - mgf=μ[sin(60) )/ ( mgcos(90) )
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