問題詳情
3. A pivoted bar has a weight of 10 kg and a length of 1 meter, and is supported by a cable, as shown below. What is the tensionforce of the cable when a 50 N box is hung at the end of the bar?
(A) 150 N
(B) 295 N
(C) 410 N
(D) 570 N
(E) 775 N
