1. What is the Torque Formula?

The torque formula calculates rotational force from horsepower and RPM. It's a fundamental equation in mechanical engineering that relates power output to rotational speed.

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 power and torque, where 1 horsepower equals 550 foot-pounds per second.

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 conversion factor that results from the relationship between horsepower (550 ft-lb/sec) and rotational speed (RPM converted to radians 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, while horsepower relates to top speed and overall performance 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.