Question: 1. (1 point) Consider the objects shown in the figure below. Which of the objects have exactly 4 unknown reaction forces? A. (c) only
1. (1 point) Consider the objects shown in the figure below. Which of the objects have exactly 4 unknown reaction forces? A. (c) only B. (d), (e), and (f) only C. (a), (b), and (c) only D. (a) and (c) only E. (a), (b), (c), (d), (e), and (f) . O B. B O C. C O D. D . (a) (b) (d) 45
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