- #1
pixel01
- 688
- 1
Hi all,
There are 2 identical gears which are in the same axis. At first gear #1 rotates at angular velocity w, while gear #2 stays still. Now the gears are attached and rotate at the same angular velocity w'.
Because the angular momentum is conserved so w' = 0.5 w
But then the kinetic energy is not conserved?
There are 2 identical gears which are in the same axis. At first gear #1 rotates at angular velocity w, while gear #2 stays still. Now the gears are attached and rotate at the same angular velocity w'.
Because the angular momentum is conserved so w' = 0.5 w
But then the kinetic energy is not conserved?