Question

In 2015, in Warsaw, Poland, Olivia Oliver of Nova Scotia broke the world record for being the fastest spinner on ice skates. She achieved a record 342 rev/min, beating the existing Guinness World Record by 34 rotations. If an ice skater extends her arms at that rotation rate, what would be her new rotation rate (in rev/min)? Assume she can be approximated by a 46 kg rod that is 1.6 m tall with a radius of 13 cm in the record spin. With her arms stretched take the approximation of a rod of length 162 cm with 10% of her body mass aligned perpendicular to and centered on the spin axis. Neglect frictional forces.

______ rev/min

Answer 1