# 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?

##### 1 Answer

Feb 27, 2016

#### Answer:

0.64

#### Explanation:

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