Dgyt
鐞嗚鍔涘涔犻
娉細璇峰悓瀛︿滑鎶婂姩鍔涘鐨勪綔涓氶濂藉ソ鐨勭湅鐪嬶紒
锛?/p>
锛?/p>
1
銆佸钩闈㈡敮鏋剁敱涓夋牴鐩存潌
AC
銆?/p>
BE
銆?/p>
BC
閾版帴鑰屾垚锛屽叾涓?/p>
AC
鏉嗛搮鐩达紝
BE
鏉嗘按骞筹紝鍚?/p>
鏉嗚嚜閲嶄笉璁★紝鍙楀姏濡傚浘鎵�绀猴紝
BD
锛?/p>
DE
锛?/p>
CD=DA
锛?/p>
a
锛?/p>
A
澶勪负鍥哄畾绔紝
B
銆?/p>
C
銆?/p>
D
涓夊
涓洪摪鎺ワ紝璇曟眰
A
澶勭殑绾︽潫鍙嶅姏鍜?/p>
BC
鏉嗙殑鍐呭姏銆?/p>
2
銆?/p>
鍥?/p>
涓?/p>
鍚?/p>
鏉?/p>
浠?/p>
涔?/p>
闂?/p>
鍧?/p>
涓?/p>
閾?/p>
閾?/p>
杩?/p>
鎺?/p>
锛?/p>
鏉?/p>
鑷?/p>
閲?/p>
涓?/p>
璁?/p>
锛?/p>
B
涓?/p>
鎻?/p>
鍏?/p>
绔?/p>
P=1000N,AE=EB=CE=ED=1m
锛?/p>
姹傛彃鍏ョ
B
鐨勭害鏉熷弽鍔涳紝浠ュ強
AC
鏉嗙殑鍐呭姏銆?/p>