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10.圖為在水平面上的高架工作車示意圖,車體質量為M(不含支架),質心恰在前輪軸正上方,前後輪軸間距為。均質支架質量為,支架底端的支點恰在後輪軸正上方。支架頂端工作台與人員總質量為,質心恰在支架頂端正
問題詳情
10.圖為在水平面上的高架工作車示意圖,車體質量為M(不含支架),質心恰在前輪軸正上方,前後輪軸間距為。均質支架質量為,支架底端的支點恰在後輪軸正上方。支架頂端工作台與人員總質量為,質心恰在支架頂端正上方。設工作時支架與鉛垂線的夾角為 30˚ ,要使車體不至翻覆,支架長度最大可為多少?
(A)8a
(B)
(C)
(D)
(E)。
參考答案
答案:B
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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