1. What is Torque Calculation from Power?

Definition: This calculator determines the torque produced by a rotating system based on its power output and rotational speed.

Purpose: It helps engineers and technicians understand the rotational force generated by motors, engines, and other rotating machinery.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Torque (pound-feet)
• \( P_w \) — Power (watts)
• \( RPM \) — Rotational speed (revolutions per minute)
• \( 2\pi \) — Conversion factor for radians
• \( 60 \) — Seconds to minutes conversion

Explanation: The formula converts power in watts to torque in pound-feet by accounting for the rotational speed and unit conversions.

3. Importance of Torque Calculation

Details: Understanding torque is crucial for designing mechanical systems, selecting appropriate motors, and ensuring proper power transmission.

4. Using the Calculator

Tips: Enter the power in watts and rotational speed in RPM. Both values must be greater than zero for accurate calculations.

5. Frequently Asked Questions (FAQ)

Q1: Why is 60 included in the formula?
A: The 60 converts seconds to minutes since power is energy per second (watts) while RPM is revolutions per minute.

Q2: What's the relationship between torque and power?
A: Power is the rate of doing work, while torque is the rotational force. Power equals torque multiplied by angular velocity.

Q3: Can I use horsepower instead of watts?
A: Yes, but you'll need to convert horsepower to watts first (1 HP = 745.7 watts) for this formula.

Q4: Why does torque decrease as RPM increases?
A: For a given power output, the formula shows torque is inversely proportional to RPM - higher speeds mean less force per revolution.

Q5: How accurate is this calculation?
A: It provides theoretical torque. Actual torque may vary due to efficiency losses, friction, and other real-world factors.