What is the rotational turning moment applied to a pulley called ___________________?
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Answer: E. torque
Explanation
Torque is defined as the rotational turning moment applied to a shaft or pulley. Multiplying applied force by the perpendicular distance from the pivot yields torque. This rotational moment causes angular acceleration in rotating mechanical transmission systems. Torque is measured in Newton-meters in the standard International System of Units. It serves as the rotational equivalent of linear force in mechanical physics. Power transmission calculations depend directly on operating torque and rotational speed.
Automobile specifications highlight engine torque to indicate towing and acceleration capacity. Electric motors are rated by the maximum torque they can deliver to loads. Fasteners like bolts require specific torque values during assembly to ensure secure clamping. Option A describes resistance to changes in motion rather than an applied turning moment. Option B refers to linear momentum, which is the product of mass and velocity. Option D measures energy transferred by a force acting over a displacement distance.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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