For full points I would like to see the work and a correct answer. Thank you. Es

ID: 2124051 • Letter: F

Question

For full points I would like to see the work and a correct answer.

Thank you.

Estimate the position of the center of mass of the arm.

From the shoulder joint to the middle of the hand is .61m away with a mass of 4.2N

From the shoulder joint to the middle of the lower arm is .38m away with a mass of 11N

From the shoulder joint to the middle of the upper arm is .13m away with a mass of 17N.

Given the data in the diagram, estimate the position of the center of mass of the arm. (W1 = 17 N, W2 = 11 N, W3 = 4.2 N)

the centere of mass of arm = (0.61*4.2+0.38*11+0.13*17)/ total weight = 0.278 m away from the shoulder joint .

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