A 0.55 kg block attached to a spring with force constant 131 N/m is free to move on a frictionless, horizontal surface as in the figure below. The block is released from rest after the spring is stretched 0.13 m. (a) At that instant, find the force on the block.  N (b) At that instant, find its acceleration.  m/s2

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Q: Fmax

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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.