What Is the Maximum Length of a Metal Cable That

question 58

Multiple Choice

What is the maximum length of a metal cable that can hang vertically supported from one end of the cable? The Young's modulus of this metal is 2.10 × 10¹¹ N/m²,its tensile strength (the maximum tensile stress it can support without breaking) is 7.40 × 10⁸ N/m²,and its density is 7.60 × 10³ kg/m³.

• A)9.94 km
• B)4.22 km
• C)456 km
• D)1.75 km
• E)24.8 km

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Definitions:

Negative Reinforcement

A behavioral principle where the removal of an unpleasant stimulus following a desired behavior increases the likelihood of that behavior being repeated.

Escape

The act of getting away from a place or situation, often used in the context of avoiding or coping with negative circumstances or feelings.

Unpleasant

Causing discomfort, unhappiness, or revulsion; not enjoyable or pleasant.

Operant Conditioning

A learning process through which the strength of a behavior is modified by reinforcement or punishment.