A block of mass m rests on a rough horizontal surface and is attached to a spring of stiffness k. The coefficients of both static and kinetic friction are p. The block is displaced a distance xo to the right of the unstretched position for the spring and released from rest. If the value for xo is large enough, the spring force will overcome the maximum available static friction force and the block will slide toward the unstretched position of the spring with an acceleration a= ug - k/mx, where x represents the amount of stretch (or compression) in the spring at any given location in the motion. Use the values m = 9 kg. k = 105 N/m, p = 0.50, and xo = 1110 mm and determine the final spring stretch (or compression) x, when the block comes to a complete stop. The distance x, will be positive if to the right (spring stretched) and negative if to the left (spring compressed).

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In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics. 

Equilibrium of Forces

The tension created on one body during push or pull is known as force.