[填空题]
A rotating merry-go-round makes one complay1c7j pqa hyhwy2 j/2gu*. t/ft-.qaete revolution ga66rvi hq/,y in 4.0 s (Fig. 8–38). (a) What is the linear speed oy 6,r 6gqha/vif a child seated 1.2 m from the center? $m/s$ (b) What is her acceleration (give components)? $m/s^2$ the center
Post time 2025-2-18 20:00:22
