26 某一梁具如圖之橫斷面，且已知其對形心軸 z 之慣性矩為。若此橫斷面承受剪力 V=6 kN 作用，則最大剪應力為何？【題組】27 承上題，若該斷面承受如圖之 4 kN●m 彎矩作用，則最大撓曲

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26 某一梁具如圖之橫斷面，且已知其對形心軸 z 之慣性矩為。若此橫斷面承受剪力 V=6 kN 作用，則最大剪應力為何？

27 承上題，若該斷面承受如圖之 4 kN●m 彎矩作用，則最大撓曲拉應力為？
(A) 10.14 MPa
(B) 12.67 MPa
(C) 15.21 MPa
(D) 17.73 MPa

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