3/326 The spring of stiffness k is compressed and sud- denly released, sending the particle of mass m sliding along the track. Determine the minimum spring compression 8 for which the particle will not lose contact with the loop-the-loop track. The sliding surface is smooth except for the rough por- tion of length s equal to R, where the coefficient of kinetic friction is Mk.

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.