Piano Action Model
Purpose
Demonstrates complex lever actions using a sectioned piano key mechanism. A single key press activates six interconnected levers of all three classes, illustrating torque, mechanical advantage, and energy transfer through sequential linkages.
Figure 1:
The cutaway piano action model reveals the complex interplay of six levers: the key (first-class), damper lifter (second-class), and a three-lever complex including the jack mechanism that enables the hammer to strike and immediately fall away from the string.
Demo Apparatus
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