• 2022-06-04
    (较易) 一弹簧振子系统竖直挂在电梯内,当电梯静止时,振子谐振频率为。现使电梯以加速度向上作匀加速运动,则其谐振频率将( )。https://p.ananas.chaoxing.com/star3/origin/47a84275408c6331385cecc6336cbb28.pnghttps://p.ananas.chaoxing.com/star3/origin/e65ce539506ca980219b3ffcc51da2fc.png