An object, previously at rest, slides #7 m# down a ramp, with an incline of #(pi)/3 #, and then slides horizontally on the floor for another #6 m#. If the ramp and floor are made of the same material, what is the material's kinetic friction coefficient?
It can be solved by applying conservation of mechanical energy.
The initial PE of the body =
The frictional force exerted by the ramp
Again the frictional force exerted by horizontal floor
By law of conservation of energy
Work done against friction = Initial PE