Hello, For my physics school experiment I need to: 1. Strike a copper ball, get it to vibrate 2. And then measure its resonating frequency. How do I do that? I guess it should be simple, but I don't know much about physics. I know there are programs I can use to record the sound and extract the frequency of that sound, but the first part is what bothers me the most - how do I get a copper ball to vibrate?