The small 0.18-kg slider is known to move from position A to position B along the vertical-plane slot. Determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. The distance R = 0.80 m, the spring modulus k = 141 N/m, and the unstretched length of the spring is 0.53 m. B ㅏㅏ Answers: A (a) Work done on the body by its weight: U₂ = (b) Work done on the body by the spring: U₁- IM i N-m N-m

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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.