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Torque Formula:
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The torque formula calculates rotational force from horsepower and RPM. It is a fundamental equation in mechanical engineering and automotive applications, showing the relationship between power, rotational speed, and torque output.
The calculator uses the torque formula:
Where:
Explanation: The constant 5252 comes from the fact that one horsepower is defined as 550 foot-pounds per second, and there are 2π radians in one revolution.
Details: Torque calculation is essential for engine performance analysis, vehicle design, mechanical system optimization, and understanding the power characteristics of rotating machinery.
Tips: Enter horsepower in hp and RPM in revolutions per minute. Both values must be positive numbers greater than zero for accurate calculation.
Q1: Why is the constant 5252 used in the formula?
A: The constant 5252 comes from the conversion between rotational power and torque, where 1 horsepower equals 550 foot-pounds per second and there are 2π radians per revolution.
Q2: What are typical torque values for automotive engines?
A: Typical passenger car engines produce 100-400 lb-ft of torque, while high-performance and diesel engines can produce significantly more.
Q3: How does torque relate to vehicle acceleration?
A: Torque is directly related to a vehicle's ability to accelerate. Higher torque at lower RPMs generally results in better low-end acceleration.
Q4: Can this formula be used for electric motors?
A: Yes, the same formula applies to electric motors, though their torque characteristics differ from 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 power (work done over time). Horsepower equals torque multiplied by RPM divided by 5252.