Watch the video-clip below, explain the physical phenomena involved and some potential applications.
MIT Physics Demo – Pendulum and Magnet
please make sure the answer is atleast 450 words or more
Answer preview
In the second video illustration, the perforated copper pendulum has been used to replace the solid copper pendulum. The perforated copper has cuts and undergoes the same process as the solid copper. However, unlike in the first one, when the copper that is strip-cut is swung between the electromagnet poles, the switch doesn’t slow it down. The main reason is that there is a huge alteration of the eddy currents being formed, unlike in the solid copper. The perforated copper prevents large eddy currents from forming at once, as showcased in the first part of the vide. As a result, inductance is showcased because there is a change of current flowing influenced by the perforated copper pendulum. Correspondingly, the perforated copper’s motion experienced slow braking because eddy currents smaller than the cuts formed on it can be generated. According to Paul (2011), such a concept can be used in lagging power factor in electrical machinery where AC and DC currency is automatically set. Another potential application for this concept is in the development of high performing transformers.
[502 Words]
