A revolving door (that rotates counterclockwise in Figure 7.26) was designed with five
Chapter 7, Problem 7.2.19(choose chapter or problem)
A revolving door (that rotates counterclockwise in Figure 7.26) was designed with five equally spaced panels for the entrance to the Pentagon. The arcs BC and AD have equal length. (a) What is the angle between two adjacent panels? (b) A four-star general enters by pushing on the panel at point B, and leaves the panel at point D. What is the angle of rotation? (c) With the door in the position shown in Figure 7.26, an admiral leaves the Pentagon by pushing the panel between A and D to point B. What is the angle of rotation?
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