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Figure 2.1 shows an apparatus used to rehabilitate the elbow for a variety of medical conditions. The apparatus consists of a cylindrical bar with a track in which a slider can move. The bar is strapped and fixed on the patient's body while the hand is strapped on the slider. (a) Describe and sketch the apparatus as a four-bar mechanism assuming that the shoulder joint, the elbow joint, the lower and upper arms are part of the mechanism. (b) Assign reasonable lengths to the links of the mechanism you have described in part (a); calculate the velocities of the lower and upper arms when the slider is at the middle of the track and going downwards at a speed of 0.2 m/s.

Figure 2.1 shows an apparatus used to rehabilitate the elbow for a variety of medical conditions. The apparatus consists of a cylindrical bar with a track in which a slider can move. The bar is strapped and fixed on the patient's body while the hand is strapped on the slider. (a) Describe and sketch the apparatus as a four-bar mechanism assuming that the shoulder joint, the elbow joint, the lower and upper arms are part of the mechanism. (b) Assign reasonable lengths to the links of the mechanism you have described in part (a); calculate the velocities of the lower and upper arms when the slider is at the middle of the track and going downwards at a speed of 0.2 m/s.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question 2: Figure 2.1 shows an apparatus used to rehabilitate the elbow for a variety of medical conditions. The apparatus consists of a cylindrical bar with a track in which a slider can move. The bar is strapped and fixed on the patient's body while the hand is strapped on the slider. (a) Describe and sketch the apparatus as a four-bar mechanism assuming that the shoulder joint, the elbow joint, the lower and upper arms are part of the mechanism. (b) Assign reasonable lengths to the links of the mechanism you have described in part (a); calculate the velocities of the lower and upper arms when the slider is at the middle of the track and going downwards at a speed of 0.2 m/s. Cylindrical bar Straps Slider Figure 2.1 In all your answers, state and justify your assumptions and comment on your working.
Transcribed Image Text:Question 2: Figure 2.1 shows an apparatus used to rehabilitate the elbow for a variety of medical conditions. The apparatus consists of a cylindrical bar with a track in which a slider can move. The bar is strapped and fixed on the patient's body while the hand is strapped on the slider. (a) Describe and sketch the apparatus as a four-bar mechanism assuming that the shoulder joint, the elbow joint, the lower and upper arms are part of the mechanism. (b) Assign reasonable lengths to the links of the mechanism you have described in part (a); calculate the velocities of the lower and upper arms when the slider is at the middle of the track and going downwards at a speed of 0.2 m/s. Cylindrical bar Straps Slider Figure 2.1 In all your answers, state and justify your assumptions and comment on your working.
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