搜索 - 科创

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（5）当手机架不稳定时，增加手机架底座左侧伸出的长度$d_1$，增大底座的重量$G_2$可以有效提高手机摆放的稳定性。这个也和生活经验一致，即底盘越大越沉，就越稳定。

而反映这种稳定性，就要引入一个无量纲量，稳定裕度。稳定裕度表示了一个火箭瞬时的稳定程度，一般来说，它的值越高，火箭稳定度越高。

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