wehar B real tronary forces does the man. to keep the Mead exert from his shoulder joins , he point o weight · Stationary?

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**Description of Diagram:**

The image shows a basic diagram of a person holding two dumbbells, each weighing 6.08 kg, with their arms extended in opposite directions. The person is represented by a circle (head) and a vertical line (body) with two lines representing arms, marked by dumbbells at the end. The diagram is a 3D representation with coordinate axes labeled x, y, and z, originating from a point labeled 'O' at the shoulder joint.

**Text Transcription:**

The man's arm has a position vector of 
\[
\langle -0.421, 0.856, 0.250 \rangle \, \text{[m]}
\]

What reactionary forces does the man need to exert from his shoulder joint, i.e., point O, to keep the weight stationary?
Transcribed Image Text:**Description of Diagram:** The image shows a basic diagram of a person holding two dumbbells, each weighing 6.08 kg, with their arms extended in opposite directions. The person is represented by a circle (head) and a vertical line (body) with two lines representing arms, marked by dumbbells at the end. The diagram is a 3D representation with coordinate axes labeled x, y, and z, originating from a point labeled 'O' at the shoulder joint. **Text Transcription:** The man's arm has a position vector of \[ \langle -0.421, 0.856, 0.250 \rangle \, \text{[m]} \] What reactionary forces does the man need to exert from his shoulder joint, i.e., point O, to keep the weight stationary?
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