- #1
lntz
- 54
- 0
if KE=1/2mv^2
and you have a circular object rotating, with it's mass uniformly distributed through the object (ie each part of the disc weighs the same) then obviously certain parts of the disc will be moving faster than others.
therefore closer to the middle of the disc, you have more KE and the further from the middle you have less KE. how then do you assign kinetic energy to the whole disc?
the obvious answer might be to take the midpoint, but is this correct?
this just popped up in my head whilst i was strolling home, and may not have been very clearly or technically explained, but if you can understand the point i am trying to make, please help me out :)
and you have a circular object rotating, with it's mass uniformly distributed through the object (ie each part of the disc weighs the same) then obviously certain parts of the disc will be moving faster than others.
therefore closer to the middle of the disc, you have more KE and the further from the middle you have less KE. how then do you assign kinetic energy to the whole disc?
the obvious answer might be to take the midpoint, but is this correct?
this just popped up in my head whilst i was strolling home, and may not have been very clearly or technically explained, but if you can understand the point i am trying to make, please help me out :)