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試卷名稱：112年 - 112 學士後醫學系招生考試:物理及化學#114227
年份：112年
科目：學士後西醫物理及化學
40. A 5 kg ball is held in the hand as shown in the figure, with the arm horizontal and 40 cm from the elbow joint. The forearm mass is 2 kg and the center of gravity is 18 cm from the joint. The biceps connect to the arm at 5 cm from the joint. How much force (FM) must the biceps exert to hold the ball in place? (Gravitational acceleration g = 10 m/s2 )
(A) 472 N
(B) 236 N
(C) 118 N
(D) 59 N
(E) 30 N
