Final answer:
A torque wrench is the correct tool for applying a specific amount of turning force to a fastener, with torque representing the measure of this force.
Step-by-step explanation:
The correct answer to the student's question is B) Torque wrench. A torque wrench is specifically designed to apply a precise amount of turning force or torque to a fastener such as a nut or bolt. Torque is a measure of the turning or twisting force and is calculated as the product of force and the perpendicular distance from the pivot point to the line of direction of the force. This tool ensures that the fastener is tightened to the specified torque, which is critical in many applications to ensure safety and proper function.
Torque has both magnitude and direction, and it is commonly associated with rotating objects like wheels, gears, or any similar mechanical parts. When you apply force at a further distance from the pivot or the nut, you increase the torque, making it easier to turn or loosen the nut. The maximum magnitude of torque is achieved when the force is applied perpendicularly to the fulcrum point.