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Motor Torque Formula:
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The motor torque formula calculates the rotational force produced by an engine or motor. It relates horsepower (HP) and rotational speed (RPM) to determine the torque output in pound-feet (lb-ft).
The calculator uses the motor 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 60 seconds in a minute and 2π radians in a revolution.
Details: Torque calculation is essential for understanding engine performance, vehicle acceleration, towing capacity, and overall mechanical efficiency. It helps in selecting appropriate motors for specific applications and optimizing mechanical systems.
Tips: Enter horsepower and RPM values. Both values must be positive numbers greater than zero for accurate calculation.
Q1: Why is 5252 used in the formula?
A: 5252 is a conversion constant derived from the relationship between horsepower (550 ft-lb/sec) and RPM (revolutions per minute). It ensures proper unit conversion between rotational speed and linear force.
Q2: What is 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.
Q3: At what RPM does torque equal horsepower?
A: Torque and horsepower are numerically equal at 5252 RPM, as this is where the conversion constant cancels out in the formula.
Q4: Can this formula be used for electric motors?
A: Yes, the formula applies to both internal combustion engines and electric motors, as it's a fundamental relationship between power, torque, and rotational speed.
Q5: How does torque affect vehicle performance?
A: Higher torque generally means better acceleration and towing capability, especially at lower RPMs. It's particularly important for trucks and heavy-duty vehicles.