1. What is the Torque Formula?

The torque formula calculates rotational force from horsepower and RPM. It's a fundamental equation in mechanical engineering used to determine the twisting force produced by engines and motors.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque in pound-feet (lb-ft)
• \( HP \) — Horsepower
• \( RPM \) — Revolutions per minute

Explanation: The constant 5252 is derived from the relationship between rotational speed, power, and torque. At 5252 RPM, horsepower and torque are always equal.

3. Importance of Torque Calculation

Details: Torque calculation is essential for engine performance analysis, vehicle design, mechanical system optimization, and understanding power delivery characteristics in various applications.

4. Using the Calculator

Tips: Enter horsepower and RPM values. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is 5252 used in the formula?
A: 5252 is a constant derived from the conversion between rotational units (RPM) and power units (horsepower), where 1 horsepower equals 550 foot-pounds per second.

Q2: What are typical torque values for engines?
A: Torque values vary widely by engine type. Small car engines might produce 100-200 lb-ft, while large diesel engines can produce over 1000 lb-ft of torque.

Q3: How does torque relate to vehicle performance?
A: Torque determines a vehicle's acceleration and pulling power. Higher torque at lower RPMs generally means better low-end acceleration and towing capability.

Q4: Can this formula be used for electric motors?
A: Yes, the formula applies to any rotating machinery, including electric motors, though electric motors often have different torque characteristics than 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 = (Torque × RPM) / 5252.