Work Calculator
Calculate work done by force, from velocity change, and power relationships
Physics Work Calculator
Calculation Results
Formula Used: W = F × d × cos(θ)
Example Calculations
Lifting an Object
Force: 50 N (upward)
Displacement: 2 m (upward)
Angle: 0° (force and displacement in same direction)
Work: W = 50 × 2 × cos(0°) = 100 J
Kinetic Energy Change
1. Mass: 10 kg, v₀ = 0 m/s, v₁ = 5 m/s
2. W = ½ × 10 × (5² - 0²) = ½ × 10 × 25 = 125 J
3. This work increases the object's kinetic energy
Work Formulas
Common Angles
Work Physics Facts
Work is energy transfer to or from an object
Work is measured in Joules (J) in SI units
No work is done if force is perpendicular to motion
Negative work removes energy from an object
Understanding Work in Physics
What is Work?
In physics, work is done when a force causes displacement of an object. Work is the transfer of energy to or from an object via the application of force along a displacement. It's measured in Joules (J) in the SI system.
Basic Work Formula
- •W = F × d × cos(θ) - Basic work equation
- •W: Work done (Joules)
- •F: Applied force (Newtons)
- •d: Displacement (meters)
- •θ: Angle between force and displacement
Work from Energy Changes
Work-Energy Theorem: W = ΔKE = ½m(v₁² - v₀²)
From Force: F = ma, so W = mad
Power Relationship: P = W/t
Types of Work
- Positive Work: Force and displacement in same direction
- Negative Work: Force opposes displacement (like friction)
- Zero Work: Force perpendicular to displacement
Work and Energy
- •Energy Transfer: Work is energy transferred to/from object
- •Kinetic Energy: Work changes object's motion energy
- •Potential Energy: Work can store energy in position
- •Conservation: Total energy is conserved in closed systems
Real-World Examples
- •Lifting: Positive work against gravity
- •Braking: Negative work by friction
- •Pushing Wall: Zero work (no displacement)
- •Accelerating: Work increases kinetic energy