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Torque Formula:
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Torque is a measure of the rotational force applied to an object. In mechanical engineering and automotive applications, torque represents the twisting force that causes rotation, measured in pound-feet (lb-ft) or Newton-meters (N·m).
The calculator uses the torque formula:
Where:
Explanation: The constant 5252 comes from the relationship between horsepower, torque, and RPM, where 1 horsepower equals 550 foot-pounds per second and there are 60 seconds in a minute.
Details: Torque calculation is essential for engine performance analysis, gearbox design, vehicle acceleration prediction, and mechanical system optimization. It helps engineers understand the rotational force capabilities of engines and motors.
Tips: Enter power in horsepower 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 unit conversion where 1 horsepower = 550 ft-lb/sec and there are 60 seconds in a minute (550 × 60 ÷ 2π ≈ 5252).
Q2: What is the difference between torque and power?
A: Torque is the rotational force, while power is the rate at which work is done. Power = (Torque × RPM) ÷ 5252.
Q3: What are typical torque values for different engines?
A: Small car engines: 100-200 lb-ft, performance cars: 200-500 lb-ft, heavy trucks: 500-2000+ lb-ft.
Q4: How does torque affect vehicle performance?
A: Higher torque provides better acceleration and towing capacity, while higher horsepower determines top speed.
Q5: Can this formula be used for electric motors?
A: Yes, the formula applies to any rotational system, but ensure consistent units (horsepower for power, lb-ft for torque).