Objective: Measurement and analysis of simple harmonic rotary oscillation
Pohl’s wheel or rotating (torsional) pendulum allows for the investigation of simple harmonic rotary oscillation. The only forces acting on the wheel are the restoring torque provided by a spiral spring and damping torque supplied by means of an eddy current brake with an adjustable current. This experiment demonstrates how the period of oscillation is not dependent on the initial deflection or the initial velocity, and analyses the amplitudes of the oscillations.
![Experiment: Pohl’s Torsion Pendulum (230 V, 50/60 Hz), 8000559 [UE1050500-230], Oscillations](/imagelibrary/UE1050500-230/UE1050500-230_01_Experiment-Pohl-s-Torsion-Pendulum-230-V-5060-Hz.jpg)
![Experiment: Pohl’s Torsion Pendulum (230 V, 50/60 Hz), 8000559 [UE1050500-230], Oscillations](/thumblibrary/UE1050500-230/UE1050500-230_01_1200_1200_Experiment-Pohl-s-Torsion-Pendulum-230-V-5060-Hz.jpg)
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![扭摆（与Pohl 教授提出的一致）-
用于具有阻尼的振荡分析, 1002956 [U15040], 振动](/thumblibrary/U15040/U15040_01_140_140_扭摆-与Pohl-教授提出的一致-用于具有阻尼的振荡分析.jpg)
![直流电源0 – 20 V, 0 – 5 A (230 V, 50/60 Hz), 1003312 [U33020-230], 供电器](/thumblibrary/U33020-230/U33020-230_01_140_140_直流电源0-20-V-0-5-A-230-V-5060-Hz.jpg)
![机械秒表, 1003369 [U40801], 长度测量](/thumblibrary/U40801/U40801_01_140_140_机械秒表.jpg)
![模拟万用表ESCOLA 30, 1013526 [U8557330], 手持模拟测量仪器](/thumblibrary/U8557330/U8557330_01_140_140_模拟万用表ESCOLA-30.jpg)