3 - Solenoid resonance

Consider a helicoidal spring hanging vertically with a mass attached to it as a solenoid. If one lets current flow through the spring, it creates a magnetic field. How can one influence the motion of the spring by changing this current? What happens if we put this system in an RLC circuit (where L is our spring) with AC current? What kind of resonant phenomena and energy transfer between the mechanical and electromagnetic modes can be achieved?

Report Opposition Moderation
Mexico

4.78

Croatia

5.94

7.83

6.50

Brazil

6.61

7.94

Denmark

5.78

Sweden

6.00

Team IPT

6.22

6.83

8.22

USA

8.22

Poland (Warsaw)

6.78

Poland (Krakow)

4.44

Colombia

6.61

Switzerland (EPFL)

7.00

Switzerland (ETHZ)

7.17

Italy

7.00

8.61

Germany

8.50

France

7.67

Mean :

5.96

7.43

7.28