10. In the figure, a uniform beam with a length of 3.00 m is hinged at its lower end, and a horizontal force
of magnitude 45.0 N acts at its upper end. The beam is held vertical by a cable that makes an angle 0 = 20.0° with the ground and is attached to the beam at height h = 1.50 m. What is the tension (N) in the cable?
(A) 117
(B) 131
(C) 77.8
(D) 95.8
(E) 67.7
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統計: 尚無統計資料
統計: 尚無統計資料