- #1
fawk3s
- 342
- 1
I remember my friend telling me once about this task in his physics competition. I had forgotten about it and remembered last night taking a shower. Started thinking but couldn't figure it out. Maybe you can help?
So you are given a small plastic ball, a ruler and a timer. Find the density of the ball. (I don't know if its full plastic or filled with air).
Finding cubage is easy. But finding the mass?
First I thougth that maybe I could find the mass with Ek=m*v(scuared)/2 or Ep=mgh, but you don't have neither of the E's (at least I don't think it was given).
So how do you get it? (Hope its not too simple because then I would looks really stupid again).
Thanks in advance,
fawk3s
So you are given a small plastic ball, a ruler and a timer. Find the density of the ball. (I don't know if its full plastic or filled with air).
Finding cubage is easy. But finding the mass?
First I thougth that maybe I could find the mass with Ek=m*v(scuared)/2 or Ep=mgh, but you don't have neither of the E's (at least I don't think it was given).
So how do you get it? (Hope its not too simple because then I would looks really stupid again).
Thanks in advance,
fawk3s