(Lynch & Park Exercise 2.2) Find the number of degrees of freedom of your arm, f
ID: 2073693 • Letter: #
Question
(Lynch & Park Exercise 2.2) Find the number of degrees of freedom of your arm, from your torso to your palm just past the wrist, not including finger degrees of freedom. Keep the center of the ball-and-socket joint of your shoulder stationary (do not "hunch" your shoulders). Find the number of degrees of freedom in two ways: (a) add up the degrees of freedom at the shoulder, elbow, and wrist joints; (b) fix your palm at on a table with your elbow bent and, without moving the center of your shoulder joint, investigate with how many degrees of freedom you can still move your arim. Do your answers agree? How many your palm at a fixed configuration on the table? ts were placed on your arm when you placedExplanation / Answer
a)Shoulder has 3 degree of freedom, elbow has 1 degree of freedom and wrist has 4.degree of freedim
Total degree of freedom in arm excluding finger is 8
b)This is the case of four bar mechanism keeping palm stationery
No of degree of freedom in four bar mechanism is 1
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