[填空题]
(a) What is the angular momentum 6 df3qt7 4f9/r x8eb5bu-sp/tswrwii of a figure skater spinn8pizwc il 1j9j ni5uo7 6z6oka r6z6.ting at 3.5 $rev/s$ with arms in close to her body, assuming her to be a uniform cylinder with a height of 1.5 m, a radius of 15 cm, and a mass of 55 kg? $kg \cdot m^2$ (b) How much torque is required to slow her to a stop in 5.0 s, assuming she does not move her arms? $m \cdot N$
Post time 2025-2-18 20:00:22
