Calculate force

Physics & Science
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📝 How it works:
Calculate force according to Newton: F = m × a. Use mass and acceleration to determine the acting force.

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Die Masse des Objekts
Erdbeschleunigung: 9.81 m/s²

Calculating force according to Newton: F = m × a

Newton's fundamental law combines force, mass and acceleration:

  • Force F: F = m × a (mass × acceleration)
  • Mass m: m = F / a
  • Acceleration a: a = F / m
  • Unit Newton: 1 N = 1 kg-m/s²
  • Weight force: F = m × g (g = 9.81 m/s²)

Examples:

  • Car 1000 kg, acceleration 2 m/s²: F = 2000 N = 2 kN
  • 70 kg person: Weight force = 70 × 9.81 = 687 N ≈ 0.687 kN
  • Apple 100g falls with g: F = 0.1 × 9.81 = 0.981 N ≈ 1 N

Conversion: 1 kN = 1000 N ≈ 102 kp (kilopond, obsolete). 1 kg of mass generates 9.81 N of weight force.

Applications: Automotive engineering, statics, mechanical engineering, sports (applying force), lifting technology.

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