Mistake Master · AP Physics C · Unit 7 · Topic 7.4 · Step-Through Animation
Four Joules, Traded Forever
A block, a spring, and a fixed budget that never leaves — it only changes pockets. The energy well makes the whole trade visible: kinetic at the floor, potential up the walls, and a total that refuses to move. Double the pull-back and the whole budget quadruples.
SPRING ENERGY LAB
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