Can you please show all of your work and provide an explanation. A 45kg figure s
ID: 2282637 • Letter: C
Question
Can you please show all of your work and provide an explanation.
A 45kg figure skater is spinning on the toes of her skates at 1.2rev/s . Her arms are outstretched as far as they will go. In this orientation, the skater can be modeled as a cylindrical torso (40kg , 20 cmaverage diameter, 160 cm tall) plus two rod-like arms (2.5 kg each, 66cm long) attached to the outside of the torso. The skater then raises her arms straight above her head, where she appears to be a 45 kg, 20-cm-diameter, 200-cm-tall cylinder.
What is her new rotation frequency, in revolutions per second?
Explanation / Answer
8.325 rev/s