What are the best books for theory experimental problems?

[Hamal_Arietis]

Some problems in physics are theory experiment. We have some tools, and we must find some equations for measuring. Example: Find the magnetic moment $\mu$ of the magnet if we have clock, circular wire loop, and electrical circuit.
We must find the period of oscillation of magnet. In that equation, we can find $\mu$.
What are the best books about it ??

 

[jaskamiin]

Probably will catch come flack, but honestly for a good problem book, Schaum's 3000 solved physics problems isn't bad... https://www.amazon.com/dp/0071763465/?tag=pfamazon01-20