小华的家住在5楼.一天,他把装有30个鸡蛋的塑料袋从1楼提到家里,提鸡蛋的力大约做多少功?

2024-12-03 01:28:14
推荐回答(5个)
回答1:

楼主你好,首先,计算提鸡蛋所需力:0.5*30=15牛。从1到5楼,高度大约3*4=12米。所以功等于15*12=180焦。望采纳谢谢。

回答2:

也不知道你是不是无聊来的,反正无事,小小分析下
一个鸡蛋50g,就是0.05Kg。这里应该只考虑重力(即垂直)方向的功,居民楼一般高2.6m左右,则
0.05×9.8×2.6×4×30=152.88(J)

应该只能算4个楼层高,你要是放桌子上我也没辙

回答3:

小华只在竖直方向上做工,,,,只计算鸡蛋提升的高度就够了。。。他家住在五楼,,所以提升的高度是12米,,,,,做的功是GH

回答4:

S=4×3=12m F=30×0.5=15N
W=FS=12m×15N

回答5:

几年级的题目

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