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THERMAL PROPERTIES OF MATTER

Thermal Expansion

Thermal Conductivity

A Windlass with Variable Moment of Inertia

This demonstration involves a long narrow rod which is equipped with a pair of masses that may be fixed at any position along its length. The rod is attached at its midpoint perpendicular to the axle of a pulley wheel. A torque is applied to the system by means of a mass on a string which is wrapped around the wheel. The angular acceleration of this system is shown (qualitatively) to be proportional to the torque and inversely proportional to the moment of inertia.

A Windlass with Variable Moment of Inertia