Question
In the figure below, the person completes the motion cycle in four seconds and max theta naught is 75°


positive θ 0 negative θ
(a) Assuming the arm is a cylindrical shape with a length of 50cm and radius of 5cm, what is the moment of inertia of the arm if the subject holds a 3kg dumbbell as shown in the figure below. (assume dumbbell as a point mass)
(b) Calculate the force generated by the arm movement with and without the dumbbell
(c) A single muscle is responsible for the movement shown below. What is the force exerted on the arm at the point connected to the upper arm muscle to maintain static equillibrium? (Estimate the angle and the distance using the figure below)
Note: answer as best as possible and make any assumptions needed. Will give good rating for completeness not accuracy

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Solid Cylinder or Diso ,2 2 5B 12 .2
positive θ 0 negative θ

Solid Cylinder or Diso ,2 2 5B 12 .2
0 0
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