1. What is the Torque Formula?

The torque formula calculates rotational force from power and rotational speed. It's a fundamental equation in mechanical engineering used to determine the twisting force produced by engines, motors, and other rotating systems.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (W)
• \( RPM \) — Rotations per minute (rev/min)
• \( \pi \) — Mathematical constant pi (≈3.1416)

Explanation: The formula converts power (work per unit time) to torque (rotational force) by accounting for the rotational speed. The factor 60 converts minutes to seconds, and 2π converts revolutions to radians.

3. Importance of Torque Calculation

Details: Torque calculation is essential for designing mechanical systems, selecting appropriate motors and engines, analyzing performance characteristics, and ensuring proper operation of rotating machinery.

4. Using the Calculator

Tips: Enter power in watts (W), RPM in revolutions per minute (rev/min). Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for this calculation?
A: Use watts for power and revolutions per minute for RPM. The result will be in newton-meters (Nm).

Q2: Can I use horsepower instead of watts?
A: Yes, but you must convert horsepower to watts first (1 hp = 745.7 W) before using this calculator.

Q3: Why is there a 60 in the numerator?
A: The 60 converts minutes to seconds since power is measured in watts (joules per second) while RPM is in revolutions per minute.

Q4: What is the relationship between torque, power, and RPM?
A: Torque and power are directly proportional at constant RPM. For the same power, higher RPM results in lower torque, and vice versa.

Q5: When is this formula most applicable?
A: This formula is most accurate for steady-state rotational systems where power and RPM remain relatively constant over time.