1. What is the Torque Formula?

The torque formula relates power and rotational speed to calculate the torque produced or required by a rotating system. It's fundamental in mechanical engineering and physics for analyzing rotational systems.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( \tau \) — Torque (Newton-meters, Nm)
• \( P \) — Power (watts)
• \( n \) — Rotational speed (revolutions per minute, rpm)
• \( \pi \) — Mathematical constant pi (~3.14159)

Explanation: The formula converts power (energy per unit time) to torque (rotational force) considering the rotational speed. The factor of 60 converts rpm to revolutions per second.

3. Importance of Torque Calculation

Details: Torque calculations are essential for designing motors, engines, gears, and any rotating machinery. They help determine the force needed to rotate objects and are crucial in automotive, aerospace, and industrial applications.

4. Using the Calculator

Tips: Enter power in watts and rotational speed in rpm. Both values must be positive numbers. The calculator will compute the torque in Newton-meters (Nm).

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between torque and power?
A: Torque is a rotational force, while power is the rate at which work is done. Power combines torque and rotational speed.

Q2: How do I convert between different torque units?
A: 1 Nm = 0.73756 ft-lb = 8.8507 in-lb. Use unit conversion factors for other units.

Q3: Why is rpm divided by 60 in the formula?
A: The division by 60 converts revolutions per minute (rpm) to revolutions per second, matching the watt (joule per second) unit of power.

Q4: Can this formula be used for electric motors?
A: Yes, this formula works for any rotating system where power and speed are known, including electric motors.

Q5: What if I know torque and want to find power?
A: Rearrange the formula: \( P = \tau \times 2 \pi n / 60 \)