1张A4纸的承受力有多少?很急```````````````````````````

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1张A4纸的承受力有多少?很急```````````````````````````1张A4纸的承受力有多少?很急```````````````````````````1张A4纸的承受力有多少?很急`

1张A4纸的承受力有多少?很急```````````````````````````
1张A4纸的承受力有多少?
很急```````````````````````````

1张A4纸的承受力有多少?很急```````````````````````````
一张纸能承受多大的压力,主要取决于纸张受力时的弯矩.弯矩即纸张的受力点和受反作用力的点之间的距离.弯矩越大,纸张承受的力越大,反之越小.
把重物放在竖直的纸卷上,纸的弯矩较大,因此承受的力较多.