1. What is Torque?

Torque is a measure of the rotational force applied to an object. In engineering, it's crucial for understanding the performance of engines, motors, and mechanical systems.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( Torque \) — Rotational force (N·m)
• \( P \) — Power (kW)
• \( RPM \) — Revolutions per minute
• 9550 — Conversion constant (derived from unit conversions)

Explanation: The formula relates power and rotational speed to torque, with 9550 being the conversion factor that accounts for units (kW to W and minutes to seconds).

3. Importance of Torque Calculation

Details: Torque calculation is essential for designing mechanical systems, selecting motors, and understanding engine performance characteristics.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and rotational speed in RPM. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is 9550 used in the formula?
A: 9550 comes from unit conversions: (60 seconds/minute × 1000 W/kW) / (2π radians/revolution) ≈ 9549.3, typically rounded to 9550.

Q2: What are typical torque values for engines?
A: Car engines typically produce 100-500 N·m, while industrial motors can range from 10s to 1000s of N·m depending on size.

Q3: How does torque relate to horsepower?
A: Horsepower is another measure of power where 1 HP ≈ 0.7457 kW. Torque and RPM together determine power output.

Q4: Can I use this for electric motors?
A: Yes, the formula works for any rotating machinery where power and speed are known.

Q5: What if my power is in horsepower?
A: First convert horsepower to kW by multiplying by 0.7457, then use the calculator.