Concept Checkpoints is a series of easy-to-answer questions designed to call attention to various aspects of theory.

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CHECKPOINT QUESTIONS
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Use equilibrium to determine the internal torque acting at the specified location.

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answer  
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Use equilibrium to determine the internal torque acting at the specified location.

Here is Canvas object wihch demonstrate the problem.

answer  
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Use equilibrium to determine the internal torque acting at the specified location.

Here is Canvas object wihch demonstrate the problem.

answer  
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{{slides[4]["label"]}}

Use equilibrium to determine the internal torque acting at the specified location.

Here is Canvas object wihch demonstrate the problem.

answer  
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You have correctly answered {{calculate_results()[0]}} of {{calculate_results()[1]}} problems in this series.

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The elastic torsion formula:

τ=TcJ

expresses the relationship between torque and shear stress in a shaft where T = internal torque, c = shaft radius, and J = polar moment of inertia. For a solid circular shaft, the polar moment of inertia is calculated in terms of the shaft diameter d:

J=π32d4

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{{slides[7]["label"]}}
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answer  
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{{slides[8]["label"]}}
Here is Canvas object wihch demonstrate the problem.

answer  
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{{slides[9]["label"]}}
Here is Canvas object wihch demonstrate the problem.

answer  
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You have correctly answered {{calculate_results()[0]}} of {{calculate_results()[1]}} problems in this series.

In total, you have answered {{calculate_results()[2]}} of the {{calculate_results()[3]}} problems correctly.

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The angle of twist formula:

ϕ=TLJG

expresses the relationship between torque and twist angle in a shaft where
T = internal torque,
L = shaft length,
G = shear modulus, and
J = polar moment of inertia.
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{{slides[12]["label"]}}
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answer  
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{{slides[13]["label"]}}
Here is Canvas object wihch demonstrate the problem.

answer  
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{{slides[14]["label"]}}
Here is Canvas object wihch demonstrate the problem.

answer  
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You have correctly answered {{calculate_results()[0]}} of {{calculate_results()[1]}} problems in this series.

In total, you have answered {{calculate_results()[2]}} of the {{calculate_results()[3]}} problems correctly.

Click checkpoints to try again.

You have answered {{calculate_results()[2]}} of the {{calculate_results()[3]}} problems correctly.

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