PURPOSE: To demonstrate transformations between gravitational potential energy and rotational kinetic energy.
DESCRIPTION: Used as a large-scale yo-yo, transformation of energy can easily be observed by a large class. Wind the string around the small spool radius, hold with the axis horizontal, and release. The initial gravitational potential energy is converted primarily into rotational kinetic energy, with a lesser amount of translational kinetic energy, as the device moves downward, with conversion back to gravitational potential energy after the spool reaches its minimum position and moves back upward.
REFERENCES: (PIRA 1M40.50) For other versions, see Demonstrations D1-64 and D1-65.
EQUIPMENT: Large Maxwell Pendulum, as photographed.
SETUP TIME: None.
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