A 20 N collar slides with friction 0.3 along a Horizontalrod as shown. The spring attached to the collar has an undeflected length of 4Cm and a constant of 3 N/cm . If the collar is released from rest at position 1, determine its velocity after it has moved 6Cm . to position 2.

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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.