Pohl’s torsion pendulum

Equipment:

·   Pohl’s torsion apparatus.

·   Electric motor.

·   Dc power supply  30V, 5A.

·   Analog multi meter.

·   Dc power supply for torsion pendulum.

·   Slotted scale ring and pointer.

·   Stop watch.

Description

·  Free rotary oscillations at various degrees of damping (oscillations with moderate damping, a periodic oscillations and a periodic borderline case).

• Forced oscillations and their resonance curves at various degrees of damping.

• Phase displacement between the exciter and resonator during resonance.

• Chaotic rotary oscillations


Specification:

·     Natural frequency: approx. 0.5 Hz.

·     Excitation frequency: 0 to 1.3 Hz.

·     Connectors: 4-mm safety sockets.

·     Engine: max. 24 V AC / DC, 0.7 A.

·     Brake Eddy: 0 to 2 A DC, 20 V.

·     Scale ring: 300 mm dia.

·     Dimensions: 400x140x270 mm ³.

·      Weight: 4 kg.