I Rev IP Force to Hold a Baseball A person holds a 1.42- N baseball in his hand, a distance of 34.0 cm from the elbow joint, as shown in the figure(Figure 1). The biceps, attached at a distance of 2.75 cm from the elbow, exerts an upward force of 12.6 N on the forearm. Consider the forearm and hand to be a uniform rod with a mass of 1.50 kg . You may want to review (Page 335). Part A Calculate the net torque acting on the forearm and hand. Use the elbow joint as the axis of rotation. ? t
I Rev IP Force to Hold a Baseball A person holds a 1.42- N baseball in his hand, a distance of 34.0 cm from the elbow joint, as shown in the figure(Figure 1). The biceps, attached at a distance of 2.75 cm from the elbow, exerts an upward force of 12.6 N on the forearm. Consider the forearm and hand to be a uniform rod with a mass of 1.50 kg . You may want to review (Page 335). Part A Calculate the net torque acting on the forearm and hand. Use the elbow joint as the axis of rotation. ? t
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Chapter1: Units, Trigonometry. And Vectors
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Question
Please answer Part A and Part B
![**Question 4**
**IP Force to Hold a Baseball:** A person holds a 1.42-N baseball in his hand, a distance of 34.0 cm from the elbow joint, as shown in the figure (Figure 1). The biceps, attached at a distance of 2.75 cm from the elbow, exerts an upward force of 12.6 N on the forearm. Consider the forearm and hand to be a uniform rod with a mass of 1.50 kg. You may want to review (Page 335).
---
**Figure:**
The diagram shows an arm bent at the elbow. Key features include:
- The humerus and ulna form the elbow joint.
- The biceps apply an upward force of 12.6 N at a point 2.75 cm from the elbow.
- The baseball is held 34.0 cm from the elbow, with a downward force of 1.42 N.
- Center of mass (Mg) acts downward 17.0 cm from the elbow.
---
**Part A**
Calculate the net torque acting on the forearm and hand. Use the elbow joint as the axis of rotation.
\[ \tau = \]
[Submit]
---
**Part B**
If the net torque obtained in Part A is nonzero, in which direction will the forearm and hand rotate?
- Clockwise
- Counterclockwise
[Submit]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbe2dc1e3-fb5c-4361-9a35-12adea7e457d%2F4c7458a4-63ff-4954-9c94-f29b3db3eb7d%2Fco8wpq_processed.png&w=3840&q=75)
Transcribed Image Text:**Question 4**
**IP Force to Hold a Baseball:** A person holds a 1.42-N baseball in his hand, a distance of 34.0 cm from the elbow joint, as shown in the figure (Figure 1). The biceps, attached at a distance of 2.75 cm from the elbow, exerts an upward force of 12.6 N on the forearm. Consider the forearm and hand to be a uniform rod with a mass of 1.50 kg. You may want to review (Page 335).
---
**Figure:**
The diagram shows an arm bent at the elbow. Key features include:
- The humerus and ulna form the elbow joint.
- The biceps apply an upward force of 12.6 N at a point 2.75 cm from the elbow.
- The baseball is held 34.0 cm from the elbow, with a downward force of 1.42 N.
- Center of mass (Mg) acts downward 17.0 cm from the elbow.
---
**Part A**
Calculate the net torque acting on the forearm and hand. Use the elbow joint as the axis of rotation.
\[ \tau = \]
[Submit]
---
**Part B**
If the net torque obtained in Part A is nonzero, in which direction will the forearm and hand rotate?
- Clockwise
- Counterclockwise
[Submit]
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