Force Calculator - Calculate Force, Mass & Acceleration Online
Free online force calculator to calculate force, mass, and acceleration using Newton's second law. Perfect for physics students and engineering calculations.
Force Calculation
Force Results
Enter mass and acceleration to calculate force
About Force Calculator
The Force Calculator helps you calculate force using Newton's second law of motion.
Newton's Second Law:
F = ma
Where:
- F = Force (Newtons)
- m = Mass (kilograms)
- a = Acceleration (meters per second squared)
Types of Forces:
- Gravitational Force: Weight = mg
- Frictional Force: Opposes motion
- Normal Force: Perpendicular to surface
- Applied Force: External force
- Tension Force: In ropes and cables
Units:
- Force: Newtons (N)
- Mass: Kilograms (kg)
- Acceleration: m/s²
- Weight: Newtons (N) - different from mass
Applications:
- Physics education and homework
- Engineering calculations
- Mechanical design
- Vehicle dynamics
- Sports science
Important Notes:
- Force is a vector quantity (has direction)
- Mass is different from weight
- Use consistent units (SI units)
- Consider all forces acting on an object
Note: This calculator assumes constant acceleration and mass. For variable acceleration or relativistic effects, use more advanced methods.
Frequently Asked Questions
What is Newton's second law?
Newton's second law states that the force acting on an object is equal to the mass of the object multiplied by its acceleration: F = ma.
What's the difference between mass and weight?
Mass is the amount of matter in an object (measured in kg), while weight is the force of gravity acting on that mass (measured in N). Weight = mass × gravitational acceleration.
How do I calculate force?
To calculate force, multiply the mass of the object by its acceleration: F = ma. Make sure to use consistent units (kg for mass, m/s² for acceleration).
What are Newtons?
A Newton (N) is the SI unit of force. One Newton is the force required to accelerate a 1 kg mass at 1 m/s².
Can force be negative?
Yes, force can be negative, which indicates direction. In physics, we often use positive and negative signs to show opposite directions.