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Torque Formula:
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Torque is a measure of the rotational force applied to an object. In automotive and mechanical engineering, it represents the twisting force that causes rotation, measured in pound-feet (lb-ft) or Newton-meters (Nm).
The calculator uses the torque formula:
Where:
Explanation: The constant 5252 comes from the relationship between horsepower, torque, and RPM, where 1 horsepower is defined as 550 foot-pounds per second and there are 5252 RPM in one radian per second.
Details: Torque calculation is essential for understanding engine performance, vehicle acceleration, towing capacity, and mechanical system design. It helps engineers optimize power delivery and efficiency.
Tips: Enter horsepower and RPM values. Both values must be positive numbers. The calculator will compute the torque in pound-feet (lb-ft).
Q1: Why is 5252 the constant in the formula?
A: 5252 is derived from the conversion between different units of measurement. It comes from the fact that 1 horsepower equals 550 foot-pounds per second and there are 5252 RPM in one radian per second.
Q2: What's the difference between torque and horsepower?
A: Torque measures rotational force, while horsepower measures the rate at which work is done. Horsepower = (Torque × RPM) / 5252.
Q3: At what RPM does torque equal horsepower?
A: Torque and horsepower are numerically equal at 5252 RPM, which is why this number appears in the formula.
Q4: Can I use this formula for electric motors?
A: Yes, the formula works for any rotating machinery, including electric motors, internal combustion engines, and turbines.
Q5: How does torque affect vehicle performance?
A: Higher torque at lower RPM provides better acceleration and towing capability, while horsepower determines top speed and sustained performance.