1. What is the Net Work Formula?

The Net Work formula calculates the work done on an object by all forces acting upon it, which equals the change in kinetic energy (ΔKE). This fundamental physics principle is derived from the work-energy theorem.

2. How Does the Calculator Work?

The calculator uses the Net Work formula:

Where:

• \( m \) — Mass of the object (kg)
• \( v_f \) — Final velocity (m/s)
• \( v_i \) — Initial velocity (m/s)

Explanation: The formula shows that the net work done on an object equals its change in kinetic energy, which depends on the object's mass and the difference between the squares of its final and initial velocities.

3. Importance of Net Work Calculation

Details: Calculating net work is essential in physics for understanding energy transformations, analyzing mechanical systems, and solving problems related to motion, forces, and energy conservation.

4. Using the Calculator

Tips: Enter mass in kilograms, velocities in meters per second. All values must be valid (mass > 0). Positive net work indicates increased kinetic energy, negative indicates decreased kinetic energy.

5. Frequently Asked Questions (FAQ)

Q1: What does positive net work indicate?
A: Positive net work means the object's kinetic energy has increased, typically resulting in acceleration.

Q2: What does negative net work indicate?
A: Negative net work means the object's kinetic energy has decreased, typically resulting in deceleration.

Q3: How is this related to the work-energy theorem?
A: This formula is a direct application of the work-energy theorem, which states that the net work done on an object equals its change in kinetic energy.

Q4: Can this formula be used for rotational motion?
A: No, this formula applies to linear motion. Rotational motion requires a different formula involving moment of inertia and angular velocity.

Q5: What are the SI units for net work?
A: Net work is measured in joules (J), where 1 J = 1 kg·m²/s².