Finding moment of inertia of a flywheel using rotations, with friction.

[dannyR]

ive recently done a experiment which involved a flywheel which was rotated by the force of gravity on a mass which was wrapped around the flywheel axis.

I have tried to calculate functions which will predict the behaviour as well as get the moment on inertia of the flywheel via torques of the system. I know this could be done via conservation of energy but due to liquid friction being involved I couldn't do it and i find this approach to be better as it can predict the behaviour under different circumstances.

i have attached a diagram which shows the system as well as a dirivation of my results which i would appreciate someone to check over to see if i have made any mistakes/ or to discus better ways of getting these results.

Many thanks Dany

 

[anathema]

Hello Dany,

Thank you for sharing your experiment with us. It sounds like you have conducted a very interesting and complex experiment. I would be happy to take a look at your results and offer any feedback or suggestions.

Firstly, it is important to note that the behavior and moment of inertia of a flywheel can be affected by a variety of factors, such as the weight and distribution of the mass, the size and shape of the flywheel, and the surface and air resistance it is experiencing. Therefore, it is important to ensure that these variables are controlled and accounted for in your calculations.

In terms of your approach to calculating the behavior and moment of inertia, using torques and forces is a valid method. However, as you mentioned, the presence of liquid friction can complicate the calculations. In this case, it may be helpful to consider using numerical methods, such as computer simulations, to better predict the behavior of the system under different circumstances. Additionally, incorporating the concept of conservation of energy can also provide valuable insights into the system's behavior.

I would be happy to review your results and derivation. However, without a specific diagram and equations, it is difficult for me to provide any specific feedback or suggestions. I would recommend double-checking your calculations and equations, and perhaps seeking the assistance of a colleague or mentor to review your work as well.

Overall, your experiment and approach seem very thorough and well thought out. Keep up the good work and I hope your results will contribute to further understanding of flywheel behavior. Best of luck in your future experiments!