Concept explainers
* You hang a 0.10-kg block from a spring, causing the spring to stretch 0.070 m. When the block is hanging at rest at this equilibrium position, you pull it down with a spring scale and let go of the block when the scale reading is 3.0 N. (a) Where was the block when you let go? (b) Determine the work you did stretching the spring. (c) What was the energy of the spring-block-Earth system when you let go? (d) How far will the block rise after you release it? (e) The vibrations last for 50 cycles. Qualitatively represent the beginning of cycle #1 and the beginning of cycle #25 with an energy bar chart.
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