One newton meter is equivalent to_____________?
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Answer: B. one joule
Explanation
Multiplying force in newtons by distance in meters defines the mechanical work done. One newton meter represents the exact amount of energy transferred by mechanical work. By definition in physics, one joule is formally equivalent to one newton meter. The joule serves as the standard international unit of energy, work, and heat. Isaac Newton formulated classical mechanics principles linking force, mass, and spatial acceleration. Mechanical energy and electrical energy can both be measured using standard joules.
Engineers calculate mechanical work in joules when designing moving machinery and structures. Torque is also measured in newton meters, though it represents a rotational vector quantity. Understanding energy units is essential for converting between mechanical and electrical systems. One watt measures electrical power or energy transfer rate per unit of time. Five joules is an arbitrary multiple that bears no direct unit conversion equivalence. One joule second represents the unit of action, commonly associated with Planck constant.
- Subject
- Engineering
- Category
- Electrical Engineering
- Topic
- —
- Difficulty
- medium
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