Citaat:
Origineel gepost door SYoung
Aha!
Maar daar kan ik een stokje voor steken!
"A child of mass 40 kg stands beside a circular platform of mass 80 kg and radius 2 m spinning at 2 rad/s. Treat the platform as a disk. The child steps onto the rim.
(a) Does the angular speed change? If so, what is the new value?
5
(b) She then walks to the center. Does the angular velocity change? If so, what is the new value?
3
(c) Does the kenetic energy change when she walks from the rim to the center? If so, by how much?"
Potato
Alvast bedankt  |
Potato is een waarde, fak jou.