To demonstrate Interconversion of Potential and Kinetic Energy

Materials Required  



Real Lab Procedure

  • Maxwell’s wheel is used for the interconversion of kinetic and potential energies, which consists of a wheel rigidly fixed on a long axle passing through its centre.  
  • It is suspended by two equal-length threads that are attached to the axle on both sides of the wheel.  
  • In the lowest position of the wheel, the space between the lower ends of the two threads is slightly more than that between them at the supporting at the top. 
  • The wheel is turned and raised until both threads are on the axle.  
  • The wheel gains some potential energy as it rises. When released, it falls, and its potential energy is changed into kinetic energy. 
  • When the wheel reaches its lowest point and the entire length of the two threads is fully wound out, the threads start winding up in opposite directions. 


                                                                                                          Fig: Maxwell’s wheel 

Simulator Procedure

  • Drag and drop two equal-length threads and hang them on an iron rod.  
  • Drag and drop the wheel towards the hanging thread and tie both sides of the wheel’s axle using the lowest position of the thread.  
  • Click on the wheel to put it into operation. The wheel is turned and raised until both threads wind up on the axle. 
  • Then, after the wheel is fixed on top, release the wheel by clicking the wheel. 
  • Click on the “Inference” icon to see the inference. 
  • Click on the “Quiz” button.  
  • Answer the following questions. 
  • Click on the Reset button to redo the experiment.



  • When we let go of the axle, it descends and starts winding up in the opposite direction. 



  • The wheel starts moving upwards, converting its kinetic energy into potential energy. 
  • When the wheel moves downward, potential energy is converted to kinetic energy.