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Firefighter Mechanical Aptitude · Question

Using a longer wrench to loosen a tight bolt provides:

Torque = force × distance from pivot. Longer wrench arm → more torque with same applied force.

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Question: Using a longer wrench to loosen a tight bolt provides:

Answer options:

  • Less torque ✅ More torque for the same effort
  • No change
  • More friction

Correct answer: More torque for the same effort

Explanation: Torque = force × distance from pivot. Longer wrench arm → more torque with same applied force.

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