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Torque Formula:
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The torque formula calculates rotational force from horsepower and RPM. It provides an accurate assessment of engine performance and mechanical power output in various applications.
The calculator uses the torque formula:
Where:
Explanation: The formula demonstrates the inverse relationship between torque and RPM for a given horsepower, with 5252 being the constant where horsepower and torque curves intersect.
Details: Accurate torque calculation is crucial for engine performance analysis, mechanical design, automotive engineering, and understanding power transmission systems.
Tips: Enter horsepower in hp and RPM in revolutions per minute. All values must be valid (HP > 0, RPM > 0).
Q1: Why is 5252 used in the formula?
A: 5252 is the constant where horsepower and torque values are equal in the English measurement system, derived from the relationship between power, torque, and rotational speed.
Q2: What are typical torque values for engines?
A: Torque values vary widely by engine type and size. Automotive engines typically range from 100-500 lb-ft, while industrial engines can produce much higher torque values.
Q3: How does torque relate to vehicle performance?
A: Torque determines a vehicle's acceleration and pulling power, while horsepower relates to top speed and overall performance capability.
Q4: Can this formula be used for electric motors?
A: Yes, the formula applies to any rotational power system, including electric motors, though electric motors often have different torque characteristics than combustion engines.
Q5: What's the difference between lb-ft and Nm torque measurements?
A: lb-ft (pound-feet) is the imperial unit of torque, while Nm (Newton-meters) is the metric unit. 1 lb-ft equals approximately 1.3558 Nm.