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Torque Formula:
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The torque formula calculates rotational force from horsepower and RPM. It's a fundamental equation in mechanical engineering and automotive applications that relates power output to rotational speed.
The calculator uses the torque formula:
Where:
Explanation: The constant 5252 comes from the relationship between horsepower, torque, and rotational speed. At 5252 RPM, horsepower and torque are numerically equal.
Details: Torque calculation is essential for engine performance analysis, vehicle design, transmission selection, and understanding the pulling power and acceleration characteristics of engines.
Tips: Enter horsepower and RPM values. Both values must be positive numbers greater than zero. The calculator will compute the torque in pound-feet (lb-ft).
Q1: Why is the constant 5252 used?
A: 5252 is derived from the conversion between different units of power and rotational speed. It represents the point where horsepower and torque values intersect.
Q2: What are typical torque values for engines?
A: Typical passenger car engines produce 100-400 lb-ft of torque, while heavy-duty diesel engines can produce over 1000 lb-ft.
Q3: How does torque relate to vehicle performance?
A: Higher torque generally means better acceleration and pulling power, especially at lower RPMs. Torque determines how quickly a vehicle can accelerate.
Q4: Can this formula be used for electric motors?
A: Yes, the formula applies to any rotating machinery, including electric motors, though electric motors typically have different torque curves than internal combustion engines.
Q5: What's the difference between torque and horsepower?
A: Torque is a measure of rotational force, while horsepower is a measure of work done over time. Horsepower = (Torque × RPM) / 5252.