1. What is the Torque Formula?

The torque formula calculates rotational force from horsepower and RPM. It provides a fundamental relationship between power, rotational speed, and torque in mechanical systems.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (lb-ft)
• \( HP \) — Horsepower
• \( RPM \) — Revolutions per minute
• 5252 — Conversion constant (derived from the relationship between horsepower, torque, and RPM)

Explanation: The constant 5252 comes from the conversion between different units of power and rotational speed, making the formula dimensionally consistent.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for engine performance analysis, mechanical design, power transmission systems, and understanding the relationship between power output and rotational force.

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 the constant 5252 used in the formula?
A: The constant 5252 comes from the conversion factor between horsepower (550 ft-lb/sec) and RPM (revolutions per minute) to maintain dimensional consistency.

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

Q3: How does torque relate to vehicle performance?
A: Torque determines a vehicle's acceleration and pulling power, while horsepower relates to top speed. Higher torque at lower RPM generally provides better low-end acceleration.

Q4: Can this formula be used for electric motors?
A: Yes, the formula applies to any rotating machinery, including electric motors, though the constant remains the same only when using horsepower and lb-ft units.

Q5: What's the relationship between torque and power?
A: Power is the rate of doing work, while torque is the rotational force. Power = Torque × Angular Velocity, which is the fundamental relationship this formula represents.