1. What Are Torque and RPM?

Definition: Torque is a rotational force (measured in pound-feet), while RPM (Revolutions Per Minute) measures rotational speed.

Purpose: This calculator helps determine the power output (horsepower) based on torque and RPM values.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Power (horsepower)
• \( \tau \) — Torque (pound-feet)
• \( \text{RPM} \) — Rotational speed (revolutions per minute)
• 5252 — Conversion constant

Explanation: The formula shows the relationship between rotational force, speed, and power output.

3. Importance of Torque and RPM Calculation

Details: Understanding this relationship is crucial for engine performance analysis, mechanical design, and power transmission systems.

4. Using the Calculator

Tips: Enter torque in pound-feet and RPM values. Both values must be > 0 for calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is 5252 the conversion constant?
A: 5252 comes from the conversion between foot-pounds per minute and horsepower (1 HP = 33,000 ft-lb/min).

Q2: What's the difference between torque and horsepower?
A: Torque measures rotational force, while horsepower measures the rate at which work is done.

Q3: At what RPM do torque and horsepower cross?
A: They always cross at 5252 RPM due to the formula's constant.

Q4: How does this apply to vehicles?
A: Torque affects acceleration, while horsepower affects top speed.

Q5: Can I use different units?
A: The formula requires pound-feet for torque. For metric units (Nm), use different constants.