A m=2.30 kg mass starts from rest and slides a distance d down a frictionless incline of θ=31.4o. While sliding, it comes into contact with an unstressed spring of negligible mass, as shown in the figure below. The mass slides an additional 0.192 m as it is brought momentarily to rest by compression of the spring (k=500. N/m). Calculate the initial separation d between the mass and the spring. Give your answer in meters.

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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.