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:

• \( \tau \) — Torque (lb-ft)
• \( HP \) — Horsepower
• \( n \) — Rotational speed (RPM)

Explanation: The constant 5252 comes from the conversion between horsepower (550 ft-lb/s) and RPM (revolutions per minute).

3. Importance of Torque Calculation

Details: Torque calculation is essential for designing mechanical systems, evaluating engine performance, and determining the twisting force available at different rotational speeds.

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 between horsepower (550 ft-lb/s) and RPM, where 5252 = (550 × 60) / (2π).

Q2: What are typical torque values for engines?
A: Torque values vary significantly by engine type and size. Automotive engines typically produce 100-500 lb-ft, 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. Higher torque at lower RPM generally provides better low-speed performance and towing capability.

Q4: Can this formula be used for electric motors?
A: Yes, the same formula applies to electric motors, though the torque characteristics of electric motors differ from internal 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.