{"id":46,"date":"2023-06-26T20:26:33","date_gmt":"2023-06-26T20:26:33","guid":{"rendered":"https:\/\/physigeek.com\/ja\/%e7%89%a9%e7%90%86%e7%9a%84%e3%81%aa%e9%87%8d%e3%81%95\/"},"modified":"2023-06-26T20:26:33","modified_gmt":"2023-06-26T20:26:33","slug":"%e7%89%a9%e7%90%86%e7%9a%84%e3%81%aa%e9%87%8d%e3%81%95","status":"publish","type":"post","link":"https:\/\/physigeek.com\/ja\/%e7%89%a9%e7%90%86%e7%9a%84%e3%81%aa%e9%87%8d%e3%81%95\/","title":{"rendered":"\u4f53\u91cd\uff08\u7269\u7406\u7684\uff09"},"content":{"rendered":"

\u3053\u306e\u8a18\u4e8b\u3067\u306f\u7269\u7406\u5b66\u306b\u304a\u3051\u308b\u91cd\u3055\u306e\u610f\u5473\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u305d\u3053\u3067\u306f\u3001\u91cd\u91cf\u306e\u5b9a\u7fa9\u3001\u7269\u4f53\u306e\u91cd\u91cf\u306e\u8a08\u7b97\u65b9\u6cd5\u3001\u91cd\u91cf\u3068\u8cea\u91cf\u306e\u9055\u3044\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u6bb5\u968e\u7684\u306a\u30dc\u30c7\u30a3\u30d3\u30eb\u30c7\u30a3\u30f3\u30b0\u6f14\u7fd2\u3067\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n

<\/span>\u7269\u7406\u5b66\u306b\u304a\u3051\u308b\u91cd\u3055\u3068\u306f\u4f55\u3067\u3059\u304b?<\/span><\/h2>\n

\u7269\u7406\u5b66\u3067\u306f\u3001\u7269\u4f53\u306e\u91cd\u91cf\u306f<\/strong>\u3001\u305d\u306e\u7269\u4f53\u306b\u4f5c\u7528\u3059\u308b\u91cd\u529b\u3067\u3059\u3002\u4e00\u822c\u306b\u3001\u91cd\u91cf\u306e\u6982\u5ff5\u306f\u5730\u7403\u304c\u7279\u5b9a\u306e\u7269\u4f53\u306b\u53ca\u307c\u3059\u91cd\u529b\u3092\u6307\u3057\u307e\u3059\u304c\u3001\u4ed6\u306e\u60d1\u661f\u306e\u91cd\u529b\u3082\u6307\u3059\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u3064\u307e\u308a\u3001\u91cd\u3055\u306f\u529b\u3067\u3042\u308b\u305f\u3081\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u3001\u65b9\u5411\u3001\u65b9\u5411\u3001\u4f5c\u7528\u70b9\u3092\u5099\u3048\u305f\u30d9\u30af\u30c8\u30eb\u306b\u306a\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u91cd\u91cf\u5024\u306e\u6c42\u3081\u65b9\u3092\u793a\u3057\u307e\u3059\u304c\u3001\u65b9\u5411\u306f\u5e38\u306b\u5782\u76f4\u3001\u65b9\u5411\u306f\u4e0b\u3001\u4f5c\u7528\u70b9\u306f\u4f53\u306e\u91cd\u5fc3\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002<\/p>\n

\u3054\u89a7\u306e\u3068\u304a\u308a\u3001\u7269\u7406\u5b66\u3067\u306f\u91cd\u91cf\u3068\u8cea\u91cf\u3092\u533a\u5225\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/strong>\u3002\u3053\u308c\u3089 2 \u3064\u306e\u7528\u8a9e\u306e\u610f\u5473\u306f\u65e5\u5e38\u751f\u6d3b\u3067\u8aa4\u7528\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002\u4ee5\u4e0b\u3067\u306f\u3001\u4f53\u306e\u91cd\u91cf\u3068\u8cea\u91cf\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u7269\u7406\u5b66\u306b\u304a\u3051\u308b\u91cd\u3055\u306e\u8a18\u53f7\u306f\u6587\u5b57 P \u306a\u306e\u3067\u3001\u7269\u4f53\u306e\u91cd\u3055\u306e\u529b\u3092\u8868\u3059\u77e2\u5370\u306f\u6587\u5b57 P \u306e\u6a2a\u306b\u7f6e\u304f\u3053\u3068\u3067\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u529b\u3067\u3042\u308b\u305f\u3081\u3001\u91cd\u91cf\u306e\u6e2c\u5b9a\u5358\u4f4d\u306f\u30cb\u30e5\u30fc\u30c8\u30f3\u3067\u3042\u308a\u3001\u6587\u5b57 N \u3067\u8868\u3055\u308c\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u4f53\u91cd 50 kg \u306e\u4eba\u306e\u91cd\u91cf\u306f\u7d04 490 N \u3067\u3059\u3002 <\/p>\n

<\/span>\u7269\u7406\u5b66\u3067\u306e\u91cd\u3055\u306e\u8a08\u7b97\u65b9\u6cd5<\/span><\/h2>\n

\u7269\u7406\u5b66\u3067\u306f\u3001\u7269\u4f53\u306e\u91cd\u91cf\u306e\u516c\u5f0f\u306f\u3001\u305d\u306e\u7269\u4f53\u306e\u8cea\u91cf\u306b\u91cd\u529b\u3092\u53ca\u307c\u3059\u661f\u306e\u91cd\u529b\u3092\u4e57\u3058\u305f\u3082\u306e\u306b\u7b49\u3057\u3044\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u60d1\u661f\u304c\u7269\u4f53\u3092\u5f15\u304d\u4ed8\u3051\u308b\u91cd\u529b\u3092\u8a08\u7b97\u3059\u308b<\/strong>\u306b\u306f\u3001\u7269\u4f53\u306e\u8cea\u91cf\u306b\u60d1\u661f\u306e\u91cd\u529b\u3092\u639b\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u3057\u305f\u304c\u3063\u3066\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u91cd\u91cf\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u5f0f\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 <\/p>\n

\n
\"\u7269\u7406\u7684\u306a\u91cd\u3055\"<\/figure>\n<\/div>\n

\u5730\u7403\u4e0a\u306e\u91cd\u529b\u306f 9.81 m\/ s2<\/sup>\u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <\/p>\n

\n
\u91cd\u91cf\u8a08\u7b97\u5f0f\u306e\u30c7\u30e2\u30f3\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u898b\u308b<\/strong><\/div>\n<\/div>\n

\u91cd\u529b\u306e\u516c\u5f0f\u3092\u793a\u3059\u305f\u3081\u306b\u3001\u7269\u4f53\u304c\u4ed6\u306e\u7269\u4f53\u306b\u53ca\u307c\u3059\u91cd\u529b\u3092\u8a08\u7b97\u3067\u304d\u308b\u4ee3\u6570\u5f0f\u304b\u3089\u59cb\u3081\u307e\u3059\u3002<\/p>\n

\n

\"F=G\\cdot<\/p>\n<\/p>\n

\u305f\u3060\u3057\u3001\u91cd\u529b\u306e\u516c\u5f0f\u306f\u6b63\u78ba\u306b\u306f\u3001\u4e07\u6709\u5f15\u529b\u5b9a\u6570 (G) \u306b\u5929\u4f53\u306e\u8cea\u91cf (M) \u3092\u4e57\u7b97\u3057\u3001\u5929\u4f53\u306e\u4e2d\u5fc3\u3068\u305d\u306e\u8868\u9762\u306e\u9593\u306e\u8ddd\u96e2\u306e 2 \u4e57 (r 2<\/sup> ) \u3067\u5272\u3063\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n

\n

\"g=\\cfrac{G\\cdot<\/p>\n<\/p>\n

\u3057\u305f\u304c\u3063\u3066\u3001\u3042\u308b\u5f0f\u3092\u5225\u306e\u5f0f\u306b\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u3067\u3001\u91cd\u307f\u306e\u516c\u5f0f\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n

\n

\"F=G\\cdot<\/p>\n<\/p>\n

\n

\"F=\\cfrac{G\\cdot<\/p>\n<\/p>\n

\n

\"F=g\\cdot<\/p>\n<\/p>\n

<\/div>\n

<\/span>\u91cd\u91cf\u3068\u8cea\u91cf\u306e\u9055\u3044<\/span><\/h2>\n

\u91cd\u91cf\u3068\u8cea\u91cf<\/strong>\u306f\u7269\u7406\u5b66\u306b\u304a\u3051\u308b 2 \u3064\u306e\u7570\u306a\u308b\u6982\u5ff5\u3067\u3059\u3002\u8cea\u91cf\u306f\u7269\u4f53\u304c\u6301\u3064\u7269\u8cea\u306e\u91cf\u3067\u3042\u308a\u3001\u30ad\u30ed\u30b0\u30e9\u30e0 (kg) \u3067\u6e2c\u5b9a\u3055\u308c\u307e\u3059\u3002\u4e00\u65b9\u3001\u91cd\u91cf\u306f\u661f\u304c\u7269\u4f53\u306b\u53ca\u307c\u3059\u91cd\u529b\u3067\u3042\u308a\u3001\u305d\u306e\u6e2c\u5b9a\u5358\u4f4d\u306f\u30cb\u30e5\u30fc\u30c8\u30f3 (N) \u3067\u3059\u3002<\/p>\n

\u305f\u3068\u3048\u3070\u3001\u4f53\u91cd 70 kg \u306e\u4eba\u306e\u5730\u7403\u4e0a\u306e\u4f53\u91cd\u306f 686.7 N \u3067\u3059\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u540c\u3058\u4eba\u306e\u6708\u4e0a\u306e\u4f53\u91cd\u306f\u3001\u8cea\u91cf\u306f\u540c\u3058\u3067\u3082 113.4 N \u3067\u3059\u3002<\/p>\n

\u3057\u305f\u304c\u3063\u3066\u3001\u300c\u4f53\u91cd\u306f\u3069\u308c\u304f\u3089\u3044\u3067\u3059\u304b\uff1f\u300d\u3068\u5c0b\u306d\u308b\u3068\u3001 \u00bb \u8ab0\u304b\u306e\u8cea\u91cf\u3092\u77e5\u308b\u306b\u306f\u3001\u5b9f\u969b\u306b\u300c\u3042\u306a\u305f\u306e\u8cea\u91cf\u306f\u4f55\u3067\u3059\u304b?\u300d\u3068\u5c0b\u306d\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u00bb<\/p>\n

\u91cd\u91cf\u3068\u8cea\u91cf\u306e\u3082\u3046 1 \u3064\u306e\u9055\u3044\u306f\u3001\u7279\u6027\u3092\u6e2c\u5b9a\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u6a5f\u5668\u3067\u3059\u3002\u91cd\u91cf\u306f\u52d5\u529b\u8a08\u3092\u4f7f\u7528\u3057\u3066\u6e2c\u5b9a\u3055\u308c\u3001\u8cea\u91cf\u306f\u79e4\u3092\u4f7f\u7528\u3057\u3066\u6e2c\u5b9a\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u307e\u305f\u3001\u8cea\u91cf\u306f\u5358\u306a\u308b\u6570\u5024\u3067\u3059\u304c\u3001\u91cd\u3055\u306f\u529b\u306a\u306e\u3067\u30d9\u30af\u30c8\u30eb\u306b\u306a\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u4ed6\u306e\u30d9\u30af\u30c8\u30eb\u3068\u540c\u69d8\u306b\u3001\u91cd\u307f\u306b\u306f\u65b9\u5411\u3001\u610f\u5473\u3001\u5927\u304d\u3055\u3001\u304a\u3088\u3073\u9069\u7528\u70b9\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n

<\/span>\u89e3\u6c7a\u3055\u308c\u305f\u30a6\u30a7\u30a4\u30c8\u30a8\u30af\u30b5\u30b5\u30a4\u30ba<\/span><\/h2>\n

\u6f14\u7fd2 1<\/h3>\n

\u8cea\u91cf\u304c 45 kg \u306e\u7269\u4f53\u306e\u5730\u7403\u4e0a\u3067\u306e\u91cd\u3055\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002\u5730\u7403\u306e\u91cd\u529b\u3068\u3057\u3066\u5024 g=9.81 m\/s 2<\/sup>\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 <\/p>\n

\n
\u89e3\u6c7a\u7b56\u3092\u898b\u308b<\/strong><\/div>\n<\/div>\n

\u7269\u4f53\u306e\u91cd\u91cf\u3092\u6c7a\u5b9a\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u5bfe\u5fdc\u3059\u308b\u5f0f\u3092\u9069\u7528\u3059\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n

\n

\"P=m\\cdot<\/p>\n<\/p>\n

\u6b21\u306b\u3001\u7269\u4f53\u306e\u8cea\u91cf\u3068\u5730\u7403\u306e\u91cd\u529b\u306e\u30c7\u30fc\u30bf\u3092\u5f0f\u306b\u4ee3\u5165\u3057\u3066\u3001\u91cd\u91cf\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002 <\/p>\n

\n

\"P=45\\cdot<\/p>\n<\/p>\n

<\/div>\n

\u6f14\u7fd2 2<\/h3>\n

\u5730\u7403\u4e0a\u306e\u7269\u4f53\u306e\u91cd\u3055\u306f 650 N \u3067\u3059\u304c\u3001\u706b\u661f\u306e\u3053\u306e\u91cd\u3055\u306b\u76f8\u5f53\u3059\u308b\u8cea\u91cf\u306f\u3044\u304f\u3089\u3067\u3059\u304b?\u4e8b\u5b9f: \u706b\u661f\u306e\u91cd\u529b\u306f 3721 m\/s 2<\/sup>\u3067\u3059\u3002 <\/p>\n

\n
\u89e3\u6c7a\u7b56\u3092\u898b\u308b<\/strong><\/div>\n<\/div>\n

\u91cd\u91cf\u306b\u95a2\u3059\u308b\u3053\u306e\u7269\u7406\u7684\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u3001\u4e0a\u3067\u8aac\u660e\u3057\u305f\u516c\u5f0f\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\n

\"P=m\\cdot<\/p>\n<\/p>\n

\u3053\u306e\u5834\u5408\u3001\u91cd\u91cf\u3068\u91cd\u529b\u306e\u5024\u306f\u308f\u304b\u3063\u3066\u304a\u308a\u3001\u4f53\u306e\u8cea\u91cf\u3092\u77e5\u308a\u305f\u3044\u306e\u3067\u3001\u6700\u521d\u306b\u6b21\u306e\u5f0f\u304b\u3089\u8cea\u91cf\u3092\u89e3\u304d\u307e\u3059\u3002<\/p>\n

\n

\"m=\\cfrac{P}{g}\"<\/p>\n<\/p>\n

\u6700\u5f8c\u306b\u3001\u706b\u661f\u306e 650 N \u306e\u91cd\u308a\u306e\u8cea\u91cf\u3092\u6c42\u3081\u308b\u5f0f\u306b\u30c7\u30fc\u30bf\u3092\u4ee3\u5165\u3057\u307e\u3059\u3002 <\/p>\n

\n

\"m=\\cfrac{650}{3.721}=174,68<\/p>\n<\/p>\n

<\/div>\n

\u6f14\u7fd2 3<\/h3>\n

\u8cea\u91cf 12 kg \u306e\u525b\u4f53\u304c\u3001\u6b21\u306e\u56f3\u306b\u793a\u3059\u89d2\u5ea6\u306e 2 \u672c\u306e\u30ed\u30fc\u30d7\u3067\u540a\u308a\u4e0b\u3052\u3089\u308c\u3066\u3044\u308b\u3068\u3059\u308b\u3068\u3001\u4f53\u306e\u5e73\u8861\u3092\u4fdd\u3064\u305f\u3081\u306b\u5404\u30ed\u30fc\u30d7\u304c\u53ca\u307c\u3059\u5fc5\u8981\u306e\u3042\u308b\u529b\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002 <\/p>\n

\n
\"\u7b2c\u4e00\u5e73\u8861\u6761\u4ef6\u306e\u554f\u984c\"<\/figure>\n<\/div>\n
\n
\u89e3\u6c7a\u7b56\u3092\u898b\u308b<\/strong><\/div>\n<\/div>\n

\u3053\u306e\u7a2e\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u6700\u521d\u306b\u884c\u3046\u5fc5\u8981\u304c\u3042\u308b\u306e\u306f\u3001Figure \u306e\u81ea\u7531\u4f53\u56f3\u3092\u63cf\u304f\u3053\u3068\u3067\u3059\u3002 <\/p>\n

\n
\"\u30d0\u30e9\u30f3\u30b9\u306e\u6700\u521d\u306e\u6761\u4ef6\u306e\u89e3\u6c7a\u6e08\u307f\u306e\u884c\u4f7f\"<\/figure>\n<\/div>\n

\u5b9f\u969b\u306b\u306f\u3001\u540a\u308a\u4e0b\u3052\u3089\u308c\u305f\u7269\u4f53\u306b\u4f5c\u7528\u3059\u308b\u529b\u306f\u3001\u91cd\u308a P \u306e\u529b\u3068\u5f26 T 1<\/sub>\u3068 T 2<\/sub>\u306e\u5f35\u529b\u306e 3 \u3064\u3060\u3051\u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002 \uff34 \uff11\uff58<\/sub> \u3001\uff34 \uff11\uff59<\/sub> \u3001\uff34 \uff12\uff58<\/sub>\u304a\u3088\u3073\uff34 \uff12\uff59<\/sub>\u3067\u8868\u3055\u308c\u308b\u529b\u306f\u3001\u305d\u308c\u305e\u308c\uff34 \uff11<\/sub>\u304a\u3088\u3073\uff34 \uff12<\/sub>\u306e\u30d9\u30af\u30c8\u30eb\u6210\u5206\u3067\u3042\u308b\u3002<\/p>\n

\u3057\u305f\u304c\u3063\u3066\u3001\u5f26\u306e\u50be\u659c\u89d2\u5ea6\u304c\u308f\u304b\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u5f35\u529b\u306e\u30d9\u30af\u30c8\u30eb\u6210\u5206\u306e\u5f0f\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n

\n

\"<\/p>\n<\/p>\n

\n

\"<\/p>\n<\/p>\n

\n

\"<\/p>\n<\/p>\n

\n

\"<\/p>\n<\/p>\n

\u4e00\u65b9\u3001\u91cd\u529b\u306e\u529b\u306f\u3001\u91cd\u529b\u306e\u516c\u5f0f\u3092\u9069\u7528\u3057\u3066\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n

\n

\"P=m\\cdot<\/p>\n<\/p>\n

\u554f\u984c\u6587\u306f\u3001\u7269\u4f53\u304c\u5e73\u8861\u72b6\u614b\u306b\u3042\u308b\u305f\u3081\u3001\u5782\u76f4\u65b9\u5411\u306e\u529b\u306e\u5408\u8a08\u3068\u6c34\u5e73\u65b9\u5411\u306e\u529b\u306e\u5408\u8a08\u306f\u30bc\u30ed\u306b\u7b49\u3057\u304f\u306a\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u529b\u306e\u65b9\u7a0b\u5f0f\u3092\u78ba\u7acb\u3057\u3001\u305d\u308c\u3089\u3092\u30bc\u30ed\u306b\u7b49\u3057\u304f\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002 <\/p>\n

\n

\"-T_{1x}+T_{2x}=0\"<\/p>\n<\/p>\n

\n

\"T_{1y}+T_{2y}-P=0\"<\/p>\n<\/p>\n

\u3053\u3053\u3067\u3001\u5f35\u529b\u306e\u69cb\u6210\u8981\u7d20\u3092\u3001\u524d\u306b\u898b\u3064\u3051\u305f\u5f0f\u3067\u7f6e\u304d\u63db\u3048\u307e\u3059\u3002 <\/p>\n

\n

\"-T_1\\cdot\\text{cos}(20\u00ba)+T_2\\cdot<\/p>\n<\/p>\n

\n

\"T_1\\cdot<\/p>\n<\/p>\n

\u305d\u3057\u3066\u6700\u5f8c\u306b\u3001\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u3044\u3066\u529b T 1<\/sub>\u3068 T 2<\/sub>\u306e\u5024\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002 <\/p>\n

\n

\"\\left.\\begin{array}{l}-T_1\\cdot<\/div>\n

Exercice 4<\/h3>\n

Comme le montre la figure suivante, deux objets sont reli\u00e9s par une corde et une poulie de masses n\u00e9gligeables. Si l’objet 2 a une masse de 7 kg et que l’inclinaison de la rampe est de 50\u00ba, calculez la masse de l’objet 1 pour que l’ensemble du syst\u00e8me soit dans des conditions d’\u00e9quilibre. Dans ce cas, la force de frottement peut \u00eatre n\u00e9glig\u00e9e. <\/p>\n

\n
"probl\u00e8me<\/figure>\n<\/div>\n
\n
Voir la solution<\/strong><\/div>\n<\/div>\n

Le corps 1 est sur une pente inclin\u00e9e, donc la premi\u00e8re chose \u00e0 faire est de vectoriser la force de son poids pour avoir les forces sur les axes de la pente : [latex]P_{1x}=P_1\\cdot \\text{sin}(\\alpha)” title=”Rendered by QuickLaTeX.com” height=”340″ width=”2918″ style=”vertical-align: 0px;”><\/p>\n<\/p>\n

\n

\"P_{1y}=P_1\\cdot<\/p>\n<\/p>\n

\u3057\u305f\u304c\u3063\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306b\u4f5c\u7528\u3059\u308b\u4e00\u9023\u306e\u529b\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 <\/p>\n

\n
\"\u4e26\u9032\u30d0\u30e9\u30f3\u30b9\u6f14\u7fd2\u304c\u89e3\u6c7a\u3055\u308c\u307e\u3057\u305f\"<\/figure>\n<\/div>\n

\u554f\u984c\u6587\u306f\u3001\u529b\u306e\u7cfb\u304c\u5e73\u8861\u72b6\u614b\u306b\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u308b\u305f\u3081\u30012 \u3064\u306e\u7269\u4f53\u306f\u5e73\u8861\u72b6\u614b\u306b\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u60c5\u5831\u304b\u3089\u30012 \u3064\u306e\u7269\u4f53\u306e\u5e73\u8861\u65b9\u7a0b\u5f0f\u3092\u63d0\u6848\u3067\u304d\u307e\u3059\u3002 <\/p>\n

\n

\"1\\<\/p>\n<\/p>\n

\n

\"P_1\\cdot<\/p>\n<\/p>\n

\u6b21\u306b\u3001\u91cd\u529b\u306e\u516c\u5f0f\u3092\u9069\u7528\u3057\u3066\u65b9\u7a0b\u5f0f\u3092\u7c21\u7565\u5316\u3057\u307e\u3059\u3002 <\/p>\n

\n

\"m_1\\cdot<\/p>\n<\/p>\n

\n

\"m_1<\/p>\n<\/p>\n

\u6700\u5f8c\u306b\u3001\u30c7\u30fc\u30bf\u3092\u4ee3\u5165\u3057\u3066\u3001\u7269\u4f53 1 \u306e\u8cea\u91cf\u3092\u6c42\u3081\u307e\u3059\u3002 <\/p>\n

\n

\"m_1<\/p>\n<\/p>\n

\n

\"m_1<\/p>\n<\/p>\n

\n

\"m_1=9,14<\/p>\n<\/p>\n

<\/div>\n","protected":false},"excerpt":{"rendered":"

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\u4f53\u91cd\uff08\u7269\u7406\u7684\uff09<\/span> \u3082\u3063\u3068\u8aad\u3080 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