My group mates and I have a video project about inertia and we all showed examples about it. My example was pressing a piano key. I was thinking that our teacher might think I am talking about the sound when you press a key. How will I explain it without my teacher thinking about the sound, but by the force.
-
The piano key and the internal parts connected to it all have mass and therefor inertia. The key is free to move in the up/down direction but it does not move of its own accord, nor will it move spontaneously no matter how long you sit and watch it or how much you will it to move. It will move only if an external unbalanced force acts upon it. You provide that force by pressing down with your finger. To make the piano easy to play the keys must have just a little inertia.
-
That doesn't sound like inertia to me in any sense...maybe pick another example