Help with resonance Phet simulation! I was told to complete this phet simulation

Question

Help with resonance Phet simulation!

I was told to complete this phet simulation. I have some of the parts, but I am very confused on others. Here is the link to the simulation: https://phet.colorado.edu/sims/resonance/resonance_en.html

Part 1 said to define resonance. I have that.

Part 2 says to "use the simulation to test ideas you might have about what resonacne for a mass on a spring means, then write a description for resonance that is specifc including what are the necessary components".

Along with part 2, part 3 says "Design experiments usig the tools provided in the simulation to identify what affects the natural resonance of the mass-spring systems. Organize your experiments and findings in data tables" "You will need to carefully play with the simulation to see it happen. Be sure to have more than one resonation and to change the frequency of the driver. Do NOT change the frequency too fast. It may help to use the equation f=0.5pi sqrt(k/m)."

What am I supposed to be finding using the simulation and how do I go about doing this? Like for instance, I know I can only change one variable at a time, and thus have to do many trials/multiple different data tables. But there are so many possible variables, do I do them all? I know the frequency on the grey box is the forced frequency and that the frequency in small letters under k is the natural frequency of the spring, and that for it to be in resonance the two have to be equal. Very confused about what I am supposed to be finding/doing. Thanks!!

Explanation / Answer

The key of the problem is "mass-spring system", that system is without the external mechanism.

You will find how the mechanism alters natural resonance, also, I don´t think tha you can only change one variable, you can change more and see what happend.

You already identify one think that affects the natural resonance of the original system, the forced frequency, that only in the case that is equal to the spring frequency, resonance is the original.

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