Dynamics Questions: Why Must Space Arm Be Strong in Weightless Conditions?

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The strength of a space arm in weightless conditions is crucial due to the need to handle dynamic loads and forces during operations, such as maneuvering and attaching to spacecraft. Even in microgravity, the arm must withstand the stresses of movement and potential impacts. Additionally, a strong structure ensures reliability and safety during critical tasks, preventing failure that could jeopardize missions. The design must account for various factors, including thermal expansion and material fatigue over time. Overall, the integrity of the space arm is essential for successful space operations.
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Dynamics Questions Please Help!

The space arm works in weightless conditions. Why must it still be made strong?
I really need help with this question. If anyone knows the answer please tell me or at least lead me close the the answer or have any idea of what i maybe! thanks.
 
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