A block with a mass of 4.5 kg is attached to a spring with a spring constant of 970 N/m. it is initially at rest on an inclien plane at an angle of 25 degrees with respect to the horizontal and the coefficent of kinetic friction between the block and the plane is .12/ in the intial position where the spring is compressed by a distance of d = .18m. the mass is at the lowest positiion and the spring is compressed a maximin amount. Take the intial gravtiation potential energy of the block as zero.  1) what is the blocks intitial mechanicial energy? 2) if the spring pushes the block up the incline what distance in meters will the block travel before coming to rest? the spring remains attached to both the box and the fixed wall throughout its motion.

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.