一米长7毫米厚,直径为70厘米的圆管重量是为重 圆管重量计算公式
\u5706\u7ba1\u7684\u91cd\u91cf\u8ba1\u7b97\u516c\u5f0f\u666e\u901a\u78b3\u94a2\u3001\u5408\u91d1\u94a2\u5706\u7ba1\u7406\u8bba\u91cd\u91cf\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a
w=0.02466\uff08d-s\uff09s ------\u94a2\u7684\u5bc6\u5ea6\u53d67.85kg/dm³
\u6ce8\u91ca\uff1a\u6bcf\u7c73\u91cd\u91cfkg/m=\uff08\u5916\u5f84-\u58c1\u539a\uff09*\u58c1\u539a*0.02466 \u5355\u4f4d\u53d6\u6beb\u7c73\uff1amm\u4f8b\u5982\u0444219*8\u7684\u5706\u7ba1\u6bcf\u7c73\u91cd\u91cf\u4e3a\uff1a
(219-8)*8*0.02466=41.626\u5343\u514b/\u7c73
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\u6269\u5c55\u8d44\u6599\uff1b
\u4e3b\u8981\u7528\u9014
\u5706\u7ba1\u53ef\u7528\u4e8e\u7ba1\u9053\u3001\u70ed\u5de5\u8bbe\u5907\u3001\u673a\u68b0\u5de5\u4e1a\u3001\u77f3\u6cb9\u5730\u8d28\u94bb\u63a2\u3001\u5bb9\u5668\u3001\u5316\u5b66\u5de5\u4e1a\u548c\u7279\u6b8a\u7528\u9014\u3002
\u5236\u9020\u5de5\u827a
\u5206\u7c7b
\u6309\u751f\u4ea7\u65b9\u6cd5\u53ef\u5206\u4e3a\u65e0\u7f1d\u5706\u7ba1\u548c\u710a\u63a5\u5706\u7ba1\u3002
\u65e0\u7f1d\u94a2\u7ba1\u5236\u9020\u5de5\u827a
\u7ba1\u576f\u2014\u2014\u68c0\u9a8c\u2014\u2014\u5265\u76ae\u2014\u2014\u68c0\u9a8c\u2014\u2014\u52a0\u70ed\u2014\u2014\u7a7f\u5b54\u2014\u2014\u9178\u6d17\u2014\u2014\u4fee\u78e8\u2014\u2014\u6da6\u6ed1\u98ce\u5e72\u2014\u2014\u710a\u5934\u2014\u2014\u51b7\u62d4\u2014\u2014\u56fa\u6eb6\u5904\u7406\u2014\u2014\u9178\u6d17\u2014\u2014\u9178\u6d17\u949d\u5316\u2014\u2014\u68c0\u9a8c
\u710a\u63a5\u94a2\u7ba1\u5236\u9020\u5de5\u827a
\u5e26\u94a2\u2014\u2014\u68c0\u9a8c\u2014\u2014\u526a\u5207\u2014\u2014\u5b9a\u5c3a\u2014\u2014\u5b9a\u6027\u2014\u2014\u710a\u63a5\u2014\u2014\u78e8\u5e73\uff08\u65e0\u7f1d\u5316\uff09\u2014\u2014\u5b9a\u5c3a\u2014\u2014\u68c0\u9a8c
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1b\u767e\u5ea6\u767e\u79d1-\u5706\u7ba1
\u5706\u7ba1\u7684\u91cd\u91cf\u8ba1\u7b97\u516c\u5f0f\u4e3a\u91cd\u91cf=\u5bc6\u5ea6x\u957f\u5ea6x\u03c0x(4x\u76f4\u5f84x\u539a\u5ea6-4x\u539a\u5ea6x\u539a\u5ea6)\u00f74\u3002
\u89e3\uff1a\u4ee4\u5706\u7ba1\u7684\u76f4\u5f84\u4e3aD\uff0c\u539a\u5ea6\u4e3ad\uff0c\u957f\u5ea6\u4e3al\uff0c\u94a2\u7ba1\u5bc6\u5ea6\u4e3a\u03c1\u3002
\u56e0\u4e3a\u5706\u7ba1\u7684\u4f53\u79ef=\u5916\u5706\u67f1\u7684\u4f53\u79ef-\u5185\u5706\u67f1\u7684\u4f53\u79ef
\u800c\u5706\u67f1\u7684\u4f53\u79efV=\u03c0x\u76f4\u5f84x\u76f4\u5f84x\u957f\u5ea6\u00f74\uff0c
\u6240\u4ee5\u5706\u7ba1\u7684\u4f53\u79ef=\u03c0/4xDxDxl-\u03c0/4x(D-2d)x(D-2d)xl
=\u03c0/4x(4Dd-4d^2)xl
\u53c8\u6839\u636e\u8d28\u91cf=\u4f53\u79efx\u5bc6\u5ea6\u8fd9\u4e2a\u516c\u5f0f\u53ef\u5f97\uff0c
\u94a2\u7ba1\u8d28\u91cf=\u03c0/4x(4Dd-4d^2)xlx\u03c1\u3002
\u82e5\u5f53D=50mm\uff0cd=2mm\uff0cl=200mm\uff0c\u03c1=7.85g/cm^3\uff0c
\u90a3\u4e48\u94a2\u7ba1\u7684\u8d28\u91cf=3.14/4x(4x5x0.2-4x0.2x0.2)x20x7.85=473.26\u514b\u3002
\u6269\u5c55\u8d44\u6599\uff1a
1\u3001\u8d28\u91cf\u3001\u4f53\u79ef\u548c\u5bc6\u5ea6\u4e4b\u95f4\u7684\u5173\u7cfb
\uff081\uff09\u5bc6\u5ea6\u8ba1\u7b97\u516c\u5f0f\uff1a\u5bc6\u5ea6=\u8d28\u91cf/\u4f53\u79ef\uff0c\u5373\u03c1=m/V\u3002
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\uff083\uff09\u4f53\u79ef\u8ba1\u7b97\u516c\u5f0f\uff1a\u4f53\u79ef=\u8d28\u91cf/\u5bc6\u5ea6\uff0c\u5373V=m/\u03c1\u3002
2\u3001\u5706\u67f1\u4f53\u8ba1\u7b97\u516c\u5f0f
\u5706\u67f1\u4f53\u4f53\u79ef=\u5e95\u9762\u79efx\u9ad8=\u03c0x\u5e95\u9762\u534a\u5f84x\u5e95\u9762\u534a\u5f84x\u9ad8
\u5706\u67f1\u4f53\u8868\u9762\u79ef=\u5e95\u9762\u79efx2+\u4fa7\u9762\u79ef=\u03c0x\u5e95\u9762\u534a\u5f84x\u5e95\u9762\u534a\u5f84x2+\u03c0x\u5e95\u9762\u76f4\u5f84x\u9ad8
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u8d28\u91cf
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u5706\u67f1
绛旓細鍙跺瓙鐢熼暱涓虹皣鐢燂紝鏌勯暱绾︿负40鍘樼背锛岀洿寰绾7姣背锛屽熀閮ㄥ憟鐜扮伆妫曡壊锛屽悜涓婂欢浼歌嚦鍙惰酱閮ㄥ垎鍒欒浆涓烘祬妫曡壊锛岃〃闈㈣鐩栫潃瀵嗛泦鐨勮妫曡壊鑷抽粦瑜愯壊鐨勭嫮鎶拡褰㈤碁鐗囥傚彾鐗囩殑褰㈢姸涓洪暱鍦嗙姸鎶拡褰紝鏈闀垮彲杈70鍘樼背锛屽搴︾害涓28鍘樼背锛屽皷绔愭笎鍙樺皷锛屽熀閮ㄤ笉缂╃煭锛屽憟涓鍥炵窘鐘剁粨鏋勶紝鍏辨湁30-40瀵圭窘鐗囥備笅閮ㄧ殑缇界墖瀵圭敓锛屼笂閮ㄥ垯...
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绛旓細閽㈡瀵嗗害鎸7.85鍏/绔嬫柟鍘樼背 3.14脳锛7梅2锛²脳10脳7.85 =3019.5025鍏 閽㈡閲嶉噺涓:3019.5025鍏嬨
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