1. What is the Torque Formula?

The torque formula T = (HP × 5252) / RPM calculates torque from horsepower and RPM. This equation is fundamental in mechanical engineering and automotive applications for determining rotational force.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

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

Explanation: The constant 5252 comes from the relationship between rotational speed, torque, and power in the imperial system of units.

3. Importance of Torque Calculation

Details: Torque calculation is essential for engine performance analysis, vehicle dynamics, mechanical design, and understanding power transmission systems.

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 the constant that results from the conversion between horsepower, torque, and RPM in the imperial system (1 HP = 550 ft-lb/s).

Q2: What are typical torque values for engines?
A: Torque values vary widely by engine type and size. Automotive engines typically produce 100-500 lb-ft of torque, while industrial engines can produce much more.

Q3: How does torque relate to vehicle performance?
A: Torque determines a vehicle's acceleration and pulling power, while horsepower relates to top speed and overall performance 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 relationship between torque and power?
A: Power (HP) is the rate at which work is done, while torque is the rotational force. Power = (Torque × RPM) / 5252 in the imperial system.