1. What is Motor Torque?

Torque is a rotational force produced by an electric motor. It represents the motor's ability to do work and is measured in Newton-meters (Nm). The torque produced by a motor depends on its power and rotational speed.

2. How Does the Calculator Work?

The calculator uses the motor torque equation:

Where:

• \( \tau \) — Torque (Nm)
• \( P \) — Power (watts)
• \( \omega \) — Angular speed (radians per second)

Explanation: The equation shows that torque is inversely proportional to angular speed when power is constant. Higher speed means lower torque for the same power output.

3. Importance of Torque Calculation

Details: Calculating motor torque is essential for selecting the right motor for an application, ensuring proper performance, and preventing mechanical failures.

4. Using the Calculator

Tips: Enter power in watts and angular speed in radians per second. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I convert RPM to rad/s?
A: Multiply RPM by 0.10472 (2π/60) to convert to rad/s.

Q2: What's the difference between torque and power?
A: Torque is rotational force, while power is the rate of doing work (torque × angular speed).

Q3: Why does torque decrease as speed increases?
A: For a given power, the motor must trade off between speed and torque (P = τ × ω).

Q4: What are typical torque values for electric motors?
A: Small motors might produce 0.1-1 Nm, while industrial motors can produce hundreds of Nm.

Q5: How does voltage affect torque?
A: In DC motors, torque is directly proportional to current, which is affected by voltage.