| 释义 |
- 1
m2g Now, I know what T is, that is, m2 g + so m2 g equals m1 g sine alpha plus the maximum frictional force, which is this value. 而T又等于,因此m2g=m1gsinα,最大静摩擦力，也就是上面这个。 - 2
Now, I don't want this ladder to slide, so now I have a requirement that the frictional force must be less or equal to the maximum frictional force possible. 我不希望梯子滑下来，所以我要求，摩擦力必须小于，或者等于，摩擦力的可能最大值。 - 3
So now the situation is only safe as long as the frictional force is smaller or equal to the maximum value possible. 所以只有当,摩擦力,小于或等于最大值的,时候才不会倒。
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