1. What is Torque?

Torque is a measure of the rotational force applied to an object. In the context of lifting weights, it represents the force needed to rotate a lever or pulley to lift an object.

2. How Does the Calculator Work?

The calculator uses the torque equation:

Where:

• \( \tau \) — Torque (N·m)
• \( F \) — Force applied (newtons)
• \( r \) — Radius or lever arm length (meters)

Explanation: The torque increases with either greater force or longer lever arm. This principle is fundamental in mechanical systems like pulleys, gears, and levers.

3. Importance of Torque Calculation

Details: Calculating torque is essential for designing mechanical systems, determining motor requirements, and ensuring safe operation of lifting equipment.

4. Using the Calculator

Tips: Enter the force in newtons (1 kg ≈ 9.81 N at Earth's gravity) and the radius in meters. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How does torque relate to lifting weight?
A: Torque determines the rotational force needed at a pivot point to lift a weight at the end of a lever arm.

Q2: What's the difference between torque and force?
A: Force is a push or pull, while torque is a rotational force that causes angular acceleration.

Q3: How do I convert kg to newtons?
A: Multiply mass in kg by 9.81 m/s² (Earth's gravity). 1 kg = 9.81 N.

Q4: Why does a longer lever arm reduce needed force?
A: Torque = Force × Distance, so increasing distance allows less force to achieve the same torque.

Q5: Can this be used for pulley systems?
A: Yes, the same principle applies where radius is the pulley radius and force is the tension in the rope.