• 2021-06-03
    一质点从静止出发沿半径R=1 m的圆周运动,其角加速度随时间t的变化规律是http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/65fcf6a1dd0142e39d3b9581b63dbf8d.png(SI), 则t=1s时质点的角速度